Subtitles section
Repeat sentence
Subtitles mode
Full screen
Previous
Next
x 1.0
Playback speed
More

What Causes The Northern Lights?

Video vocabulary

result

Copy vocabulary

US / rɪ'zʌlt /

UK / rɪˈzʌlt /

A2
  • noun
  • Something produced through tests or experiments
  • Final score of a competition, election or game
  • verb
  • To be the outcome of other causes and effects

space

Copy vocabulary

US / speɪs /

UK / spes /

A1
  • noun
  • Empty area kept for a specific reason, like a car
  • Empty area with nothing in it
  • Area in the sky where the stars are
  • Area between written words on a page
  • verb
  • To make a certain distance or time between

simple

Copy vocabulary

US / 'sɪmpl /

UK / ˈsɪmpəl /

A1
  • adjecitve
  • Not hard to understand or do; not complex
  • Having only a few parts; not complex
  • Being ordinary or normal
  • Being plain; without a lot added for style

show

Copy vocabulary

US / ʃəʊ /

UK / ʃo /

A1
  • noun
  • False display of love, emotion or action
  • An event for displaying or promoting goods
  • Play, opera or theater production
  • Presentation that is broadcast on TV or radio
  • verb
  • To be easily seen or displayed
  • To display your emotions or feelings
  • To let someone see something; display
  • To explain or teach how something is done
  • To lead someone somewhere; point them to something
  • To prove something to be true, correct
  • To reveal or allow something to be seen

work

Copy vocabulary

US / wɜ:k /

UK / wɚk /

A1
  • adjecitve
  • Activity completed in order to make money
  • noun
  • The product of some artistic or literary endeavor
  • Everything created by an author, artist, musician
  • Activity you do in order to make money
  • Place of employment
  • Final product or result of a some labor or effort
  • verb
  • To bring into a specific state of success
  • To be functioning properly, e.g. a car
  • To do your job in your company or workplace
  • To make an effort to do something
  • To operate a machine or device

bit

Copy vocabulary

US / bɪt /

UK / bɪt /

A1
  • noun
  • Device put in a horse's mouth to control it
  • Small piece of something
  • verb
  • (E.g. of fish) to take bait and be caught

believe

Copy vocabulary

US / bɪ'li:v /

UK / bɪˈliv /

A1
  • verb
  • To think or accept that something is true
  • To have a particular opinion about something

bright

Copy vocabulary

US / braɪt /

UK / braɪt /

A2
  • adjecitve
  • Cheerful and happy (manner)
  • (Of color) light and easy to see; vivid
  • Producing a lot of light
  • Smart; intelligent; clever

moon

Copy vocabulary

US / mu:n /

UK / mun /

A2
  • noun
  • Round object circling the Earth at night
  • verb
  • To expose your buttocks as a joke

look

Copy vocabulary

US / lʊk /

UK / lʊk /

A1
  • noun
  • Person's beauty or physical attractiveness
  • Particular style of dress, clothes, or appearance
  • The way someone, something appears to be
  • Act of searching for or examining something
  • verb
  • To appear to be; seem

red

Copy vocabulary

US / red /

UK / rɛd /

A1
  • adjecitve
  • Being the color of blood

thank

Copy vocabulary

US / θæŋk /

UK / θæŋk /

A1
  • verb
  • To tell someone you are grateful to them

atom

Copy vocabulary

US / 'ætəm /

UK / ˈætəm /

B1
  • noun
  • Smallest bit that matter can be broken down into

hawaii

Copy vocabulary

US / hə'wɑ:i: /

UK / hə'wɑ:i: /

A1
  • noun
  • A state in the United States in the central Pacific on the Hawaiian Islands
  • other
  • Largest and southernmost of the Hawaii islands; has several volcanic peaks

they

Copy vocabulary

US / ðeɪ /

UK / ðe /

A1
  • pronoun
  • Two or more people, animals, or things

very

Copy vocabulary

US / 'verɪ /

UK / ˈvɛri /

A1
  • adjecitve
  • Concerning a large degree or amount
  • adverb
  • A lot; much; many
  • Used to stress or emphasize a noun

its

Copy vocabulary

US / ɪts /

UK / ɪts /

A1
  • adjecitve
  • Referring to or belonging to ‘it’
  • determiner
  • Of something; belonging or related to something
  • other
  • Possessive form of “it”

discharge

Copy vocabulary

US / dɪsˈtʃɑ:dʒ /

UK / dɪsˈtʃɑ:rdʒ /

B1
  • noun
  • A substance that has been released
  • The retirement of someone from service e.g. army
  • Act of firing a weapon
  • Substance that is released
  • verb
  • To complete a task that has been assigned
  • To produce or release a substance
  • To deliver an electric charge
  • To let someone leave the army or other service
  • To fire or shoot (a gun)
  • To release a person or thing from jail, hospital

honestly

Copy vocabulary

US / ˈɒnɪstli /

UK / ˈɑnɪstli /

A2
  • adverb
  • With truth or sincerity; I'm being honest with you

pretty

Copy vocabulary

US / 'prɪtɪ /

UK / ˈprɪti /

A1
  • adjecitve
  • Being attractive to the eye in a simple way
  • adverb
  • Very; to a great degree

solar

Copy vocabulary

US / 'səʊlə(r) /

UK / ˈsolɚ /

B1
  • adjecitve
  • Concerning the sun, or its heat

activity

Copy vocabulary

US / æk'tɪvətɪ /

UK / ækˈtɪvɪti /

A1
  • noun
  • An action or task, e.g. sports, washing clothes

davis

Copy vocabulary

US / 'deɪvɪs /

UK / 'devɪs /

A1
  • proper noun
  • An academic and agricultural city in north central California, west of Sacramento; population 62,593

spot

Copy vocabulary

US / spɒt /

UK / spɑt /

A2
  • noun
  • A certain place or area
  • A difficult time; awkward situation
  • Place or ranking on a list
  • A small amount of (substance help hard work etc.)
  • Mark caused by a drop of liquid, food, etc.
  • verb
  • To see someone or something by chance

take

Copy vocabulary

US / teɪk /

UK / tek /

A1
  • noun
  • Filming of a single scene for TV or the movies
  • verb
  • To accept something that is offered
  • To use a method of traveling, e.g. a bus or train
  • To use a camera to make (a photo)
  • To pick up something and go away with it
  • To study a subject in school
  • To attempt to pass (an exam)
  • To require a certain amount of time, money, space

yesterday

Copy vocabulary

US / ˈjestədeɪ /

UK / ˈjestərdeɪ /

A1
  • adverb
  • Day before today
  • noun
  • Day before today

their

Copy vocabulary

US / ðɛː /

UK / ðer /

A1
  • determiner
  • Belonging to them

yes

Copy vocabulary

US / jes /

UK / jɛs /

A1
  • adverb
  • Way to say you agree or will do something

know

Copy vocabulary

US / nəʊ /

UK / noʊ /

A1
  • verb
  • To be familiar with a person or place, thing
  • To feel sure or be convinced about something
  • To discover or be aware of something
  • To be able to distinguish
  • To have knowledge of things

magnetosphere

Copy vocabulary

US / mæg'ni:təsfɪə /

UK / mæg'ni:təˌsfɪr /

A1
  • noun
  • Magnetic field of a planet; the volume around the planet in which charged particles are subject more

have

Copy vocabulary

US / həv /

UK / hæv /

A1
  • verb
  • To drink, smoke, eat or use something
  • To experience the effects of something
  • To organize an event, or join in an activity
  • To own, possess, or hold something
  • To cause to happen or produce a particular effect

last

Copy vocabulary

US / lɑ:st /

UK / læst /

A1
  • adjecitve
  • Most recent; the latest
  • The one before
  • adverb
  • Final; with nothing following; after all others
  • Most recent; the latest
  • determiner
  • The one at the end
  • verb
  • To remain or continue for a certain period of time

spit

Copy vocabulary

US / spɪt /

UK / spɪt /

B1
  • verb
  • To forcefully blow saliva out from your mouth

tonight

Copy vocabulary

US / təˈnaɪt /

UK / təˈnaɪt /

A1
  • adverb
  • Night following this day
  • noun
  • This evening; the night of today

superfluidity

Copy vocabulary

US / suːpəfluːˈɪdɪtɪ; sjuː- /

UK / /

A1
  • noun
  • (Of liquids) ability to flow easily

full

Copy vocabulary

US / fʊl /

UK / fʊl /

A1
  • adjecitve
  • Containing all the parts; complete
  • Containing or holding as much as possible
  • Having had enough food
  • adverb
  • In a direct manner; completely

sun

Copy vocabulary

US / sʌn /

UK / sʌn /

A1
  • noun
  • Light and heat coming from a large star in the sky
  • Hot shining star the Earth moves around
  • verb
  • To lie in the sunshine and enjoy its warmth

see

Copy vocabulary

US / si: /

UK / si /

A1
  • verb
  • To go on a date with someone
  • To predict whether something is, or will be true
  • To understand what someone says
  • To use your eyes to look at something
  • To visit a place often for sightseeing or pleasure
  • To visit or meet with someone
  • To find out by waiting or looking
  • To watch (a game, movie or TV show)

upper

Copy vocabulary

US / ˈʌpə(r) /

UK / ˈʌpɚ /

B1
  • adjecitve
  • Located above others of the same kind
  • Being the northern part of a region
  • Being closer to the source of a river
  • noun
  • Drug that improves mood or increases energy
  • Something happy or encouraging
  • Top part of a shoe, other than the flat bottom

hinder

Copy vocabulary

US / 'hɪndə(r) /

UK / ˈhɪndɚ /

B2
  • verb
  • To make something slow or difficult

southern

Copy vocabulary

US / ˈsʌðən /

UK / ˈsʌðərn /

A2
  • adjecitve
  • Concerning a region in the south
  • Being in or toward the south

with

Copy vocabulary

US / wɪð /

UK / wɪð, wɪθ /

A1
  • preposition
  • As an employee of a certain company
  • Against something or someone
  • By using something as a means
  • Due to; because of
  • Including
  • Possessing as a feature
  • Related to
  • (Of the manner/attitude by which you do something)
  • Used to express that people or things are together

alright

Copy vocabulary

US / ɔ:lˈraɪt /

UK / ɔlˈraɪt /

A2
  • adjecitve
  • OK; fine; good

into

Copy vocabulary

US / 'ɪntə /

UK / ˈɪntu /

A1
  • preposition
  • Moving or going inside something
  • In the same direction as; in the direction of
  • So as to become; taking the state of

other

Copy vocabulary

US / 'ʌðə(r) /

UK / ˈʌðər /

A1
  • adjecitve
  • A thing different from that mentioned
  • determiner
  • (Something) else; not the first (one)
  • pronoun
  • Being the one and only thing of that category

one

Copy vocabulary

US / wʌn /

UK / wʌn /

A1
  • pronoun
  • You; we; people in general; someone
  • The thing or person previously referred to
  • adjecitve
  • Used to refer to people generally
  • Being a strong example of (something mentioned)
  • number
  • Number 1

than

Copy vocabulary

US / ðən /

UK / ðən /

A1
  • conjunction
  • Used to compare two things that are not equal

shortly

Copy vocabulary

US / ˈʃɔ:tli /

UK / ˈʃɔrtli /

B1
  • adverb
  • Quickly; soon; in a moment
  • In an unfriendly or rude way

able

Copy vocabulary

US / 'eɪbl /

UK / ˈebəl /

A2
  • adjecitve
  • Skilled; good at something
  • Having the ability to do something

impart

Copy vocabulary

US / ɪm'pɑ:t /

UK / ɪmˈpɑrt /

B2
  • verb
  • To give a certain quality to something or someone
  • To make something known to a person or group

welcome

Copy vocabulary

US / 'welkəm /

UK / ˈwɛlkəm /

A1
  • adjecitve
  • Being what was wanted or needed
  • noun
  • Friendly greeting to someone who has arrived
  • verb
  • To greet someone who has just arrived
  • To accept or receive something happily and gladly

less

Copy vocabulary

US / les /

UK / lɛs /

A1
  • adjecitve
  • Smaller in amount or degree
  • adverb
  • To a smaller degree
  • noun
  • A smaller amount
  • preposition
  • With the subtraction of

little

Copy vocabulary

US / 'lɪtl /

UK / ˈlɪtl /

A1
  • adjecitve
  • Being short in length of time
  • Not great in size, amount, or degree; small
  • Being very young or younger than others
  • adverb
  • By an amount or degree that is not very much
  • Not often; rarely
  • noun
  • A person's name

the

Copy vocabulary

US / ðə /

UK / ðə /

A1
  • article
  • Used to refer to something already mentioned
  • Used to show there is only one of something
  • determiner
  • Used to describe all of a family

deep

Copy vocabulary

US / di:p /

UK / dip /

A1
  • adjecitve
  • Complex and important
  • Extreme or intense
  • Going far down from the surface
  • Low in pitch, as a sound
  • adverb
  • At a certain distance beneath the surface

electromagnetic

Copy vocabulary

US / ɪˌlektrəʊmægˈnetɪk /

UK / ɪˌlektroʊmægˈnetɪk /

A1
  • adjecitve
  • Having magnetic and electrical parts

neutron

Copy vocabulary

US / ˈnu:ˌtrɔn, ˈnju:- /

UK / ˈnuˌtrɑn, ˈnju- /

A1
  • noun
  • Charge and mass about equal to a proton; enters into the structure of the atomic nucleus

collide

Copy vocabulary

US / kəˈlaɪd /

UK / kəˈlaɪd /

B1
  • verb
  • To come together or crash with a lot of force
  • To disagree with or be very different from others

make

Copy vocabulary

US / meɪk /

UK / mek /

A1
  • noun
  • Product made by a particular company; brand
  • verb
  • To arrange or prepare something e.g. dinner
  • To get to (a place) on time
  • To gain the status of (teacher, lawyer, etc.)
  • To create something by putting things together
  • To earn a certain amount of money at a job
  • To cause or force a person to do something
  • To cause something to happen or be formed

order

Copy vocabulary

US / 'ɔ:də(r) /

UK / ˈɔrdɚ /

A1
  • noun
  • Religious or social group, as of nuns
  • Instructions to others to do what you want
  • State in which things are neat and organized
  • What you ask to buy, e.g. food in restaurant
  • Social or political control of an area
  • verb
  • To put things in a sequence, e.g. a, b, c
  • To give instructions to others to do what you want
  • To ask for something you want to buy, e.g. a meal

outside

Copy vocabulary

US / ˌaʊtˈsaɪd /

UK / aʊtˈsaɪd, ˈaʊtˌsaɪd /

A2
  • adverb
  • Beyond the limits or edges of some place, thing
  • noun
  • Area around or near something, such as a building
  • preposition
  • Beyond the limits or edges of some place, thing

also

Copy vocabulary

US / 'ɔ:lsəʊ /

UK / ˈɔlso /

A1
  • adverb
  • In addition; too; in a similar way

how

Copy vocabulary

US / haʊ /

UK / haʊ /

A1
  • adjecitve
  • To what degree? in what amount?
  • adverb
  • (Used to explain the way to do something)
  • exclamation
  • For what purpose or reason?
  • (Used to ask someone or something's condition)

live

Copy vocabulary

US / lɪv /

UK / liv /

A1
  • adjecitve
  • Being broadcast as events happen, not recorded
  • Carrying electric current; able to give a shock
  • Glowing because burning; hot
  • Not yet killed (for food)
  • adverb
  • (Music, drama) as it is performed
  • verb
  • To be alive
  • To experience a particular type of life
  • To make your home in a house or town

vertical

Copy vocabulary

US / ˈvɜ:tɪkl /

UK / ˈvɜ:rtɪkl /

B1
  • adjecitve
  • (Of a line, etc.) going up and down; not horizontal

you

Copy vocabulary

US / jʊ /

UK / ju /

A1
  • pronoun
  • Person someone is speaking or writing to
  • Person or people in general

just

Copy vocabulary

US / dʒʌst /

UK / dʒʌst /

A1
  • adjecitve
  • Proper or appropriate; as is deserved
  • Doing or being what is right or fair
  • Legally correct; having enough evidence
  • adverb
  • Almost; nearly
  • Exactly at the time of
  • Exactly (the same as, like)

line

Copy vocabulary

US / laɪn /

UK / laɪn /

A1
  • noun
  • Border that divides two places or regions
  • Long crease in the skin, often from age
  • Mark that is long, straight and very thin
  • Row of words, letters or numbers that are written
  • Telephone connection
  • People waiting one behind the other; queue
  • Long thin wire, e.g. for electrical signal
  • verb
  • To put material along the inside of something

proton

Copy vocabulary

US / ˈprəʊtɒn /

UK / ˈproʊtɑ:n /

B2
  • noun
  • Tiny part of atom with positive electrical charge

quantum

Copy vocabulary

US / ˈkwɒntəm /

UK / ˈkwɑ:ntəm /

B2
  • noun
  • The smallest unit or amount of energy

talk

Copy vocabulary

US / tɔ:k /

UK / tɔk /

A1
  • noun
  • Style of speaking
  • Discussion between two countries
  • Giving information in front of people; lecture
  • Saying things or ideas to someone with words
  • verb
  • To make a formal speech about something
  • To say things or ideas to someone with words

ask

Copy vocabulary

US / ɑ:sk /

UK / æsk /

A1
  • verb
  • To say to someone that you want something

hemisphere

Copy vocabulary

US / ˈhemɪsfɪə(r) /

UK / ˈhɛmɪˌsfɪr /

B2
  • noun
  • One half of a rounded, ball-like object
  • One of the two masses forming the brain

stream

Copy vocabulary

US / stri:m /

UK / strim /

A2
  • noun
  • Classes split into ability levels
  • A small river
  • verb
  • To send a constant flow of data over the internet
  • To split classes or students into ability levels

well

Copy vocabulary

US / wel /

UK / wɛl /

A1
  • adjecitve
  • Being in a fortunate, good condition or state
  • Healthy and in good condition
  • adverb
  • In an acceptable, proper, or successful manner
  • In a complete, total, or full manner
  • A great and considerable degree
  • In a successful way, in a good or satisfactory way
  • exclamation
  • Used to begin or continue a particular statement
  • Used to show you want to start saying something
  • Used to express that you are waiting for a reply
  • You say this to change the topic of a conversation
  • Used to indicate you are making a final remark
  • noun
  • Long deep hole in the ground to get water
  • verb
  • To cause your eyes to fill with tears

field

Copy vocabulary

US / fi:ld /

UK / fild /

A1
  • noun
  • Area of study, such as physics or biology
  • Piece of land used to grow crops/raise animals
  • Open area of land, especially without buildings
  • Grassed area where you play some sports
  • verb
  • To respond to something or answer a question
  • To catch or stop a ball during a game

flare

Copy vocabulary

US / fleə(r) /

UK / flɛr /

B2
  • noun
  • A brief bright light
  • Light/fire used to signal for help/warn of danger
  • Part of an object that spreads or becomes wider
  • verb
  • To become angry or excited suddenly
  • To burn or shine suddenly and briefly
  • To spread something or make something wider

special

Copy vocabulary

US / 'speʃl /

UK / ˈspɛʃəl /

A1
  • adjecitve
  • Being additional or extra
  • Different, better or greater than normal
  • noun
  • Heavily discounted sales item

through

Copy vocabulary

US / θru: /

UK / θru /

A2
  • adjecitve
  • having finished using or doing something
  • adverb
  • From the beginning of something until the end
  • preposition
  • Over, in, across an entire thing or place
  • Allowing you to pass between, or to
  • By a particular way or process; by the use of

for

Copy vocabulary

US / fə(r) /

UK / fɔr,fə /

A1
  • preposition
  • Used to show the purpose, or need of something

why

Copy vocabulary

US / waɪ /

UK / hwaɪ, waɪ /

A1
  • adverb
  • Question word to ask for a reason
  • exclamation
  • (Used to express surprise or approval)

amazing

Copy vocabulary

US / ə'meɪzɪŋ /

UK / ə'meɪzɪŋ /

A2
  • adjecitve
  • Surprising in a pleasing way
  • verb
  • To cause wonder; to surprise completely

alaska

Copy vocabulary

US / əˈlæskə /

UK / əˈlæskə /

A1
  • other
  • A state in northwestern North America; the th state admitted to the union

cool

Copy vocabulary

US / ku:l /

UK / kul /

A1
  • adjecitve
  • Steady and calm when facing difficulties
  • Almost cold; not warm or hot
  • Smart or stylish in a way (young) people admire
  • Unfriendly in an indirect way; distant
  • verb
  • To make something decrease in temperature
  • (Of an emotion, etc.) to become less strongly felt

charge

Copy vocabulary

US / tʃɑ:dʒ /

UK / tʃɑrdʒ /

A2
  • noun
  • An attack by running quickly toward someone
  • A price for a service or goods
  • When a battery has a certain amount of electricity
  • Amount of money you pay for a service
  • verb
  • To run quickly toward someone to attack them
  • To ask for money as a price for a service or goods
  • To put electricity in a battery
  • To give responsibility to take care of or manage
  • To state that someone has committed a crime

check

Copy vocabulary

US / tʃek /

UK / tʃɛk /

A1
  • adjecitve
  • Decorated with squares made up of lines
  • noun
  • Paper showing how much you owe at a restaurant
  • Printed piece of paper you sign to pay for things
  • A mark on a form, equivalent to 'yes'; tick
  • Mark used to show that something is correct
  • Procedure to prevent errors or control something
  • verb
  • To confirm the details of something are correct
  • To leave your things with staff who look after it
  • To examine something to see if something is wrong
  • To examine in order to prevent errors/a problem

difficult

Copy vocabulary

US / 'dɪfɪkəlt /

UK / ˈdɪfɪˌkʌlt, -kəlt /

A1
  • adjecitve
  • Hard; not easy; you need to work hard to do it

question

Copy vocabulary

US / 'kwestʃən /

UK / ˈkwɛstʃən /

A1
  • noun
  • Issue or problems you are dealing with
  • What you ask about; issue
  • verb
  • To ask for or try to get information
  • To have or express concerns or uncertainty

shoot

Copy vocabulary

US / ʃu:t /

UK / ʃut /

A2
  • noun
  • Emerging new part of a plant
  • verb
  • To kick or throw a ball at a goal
  • To fire a gun; injure or kill someone with a gun
  • To (cause to) fly away forcefully
  • To use a camera to record a film/take a photograph

light

Copy vocabulary

US / laɪt /

UK / laɪt /

A1
  • adjecitve
  • Being bright making it easy to see; not dark
  • Being pale and lacking darkness of color
  • Not heavy; weighing only a little
  • adverb
  • Carrying few bags when traveling
  • noun
  • A source of energy that makes a room or area bright
  • Way in which something or someone is understood
  • verb
  • To cause something to burn; put a burning match to
  • To provide a way to see ahead

molecule

Copy vocabulary

US / ˈmɒlɪkju:l /

UK / ˈmɑlɪˌkjul /

B2
  • noun
  • Two or more atoms chemically combined

those

Copy vocabulary

US / ðəʊz /

UK / ðoz /

A1
  • determiner
  • The people or things we are talking about
  • pronoun
  • The objects far from the speaker

stuff

Copy vocabulary

US / stʌf /

UK / stʌf /

A1
  • noun
  • Generic description for things, materials, objects
  • verb
  • To push material inside something, with force

cold

Copy vocabulary

US / kəʊld /

UK / kold /

A1
  • adjecitve
  • Having a very low temperature
  • Being unfriendly or lacking emotion
  • noun
  • Illness of sneezing, coughing, and a sore throat

much

Copy vocabulary

US / mʌtʃ /

UK / mʌtʃ /

A1
  • adjecitve
  • Very; to a high level or degree
  • adverb
  • A lot; large amount; a high degree of
  • Nearly; basically
  • On many occasions; often
  • noun
  • A large amount; a great quantity

haze

Copy vocabulary

US / heɪz /

UK / hez /

B2
  • noun
  • Dust, smoke, or gas that darkens or clouds the air
  • State of confusion about thoughts, or meanings
  • verb
  • To initiate members who perform dangerous acts

particle

Copy vocabulary

US / ˈpɑ:tɪkl /

UK / ˈpɑrtɪkəl /

B1
  • noun
  • Adverb or preposition that joins with a verb
  • Tiny piece or quantity of something

here

Copy vocabulary

US / hɪə(r) /

UK / hɪr /

A1
  • adverb
  • In this place; at this location, position or time

thick

Copy vocabulary

US / θɪk /

UK / θɪk /

A2
  • adjecitve
  • Difficult to see through, as fog
  • Full of (people, etc.)
  • (Of a liquid) that moves or pours slowly
  • Stupid; not smart
  • (Of person's accent) hard to understand
  • Having a large distance between two surfaces

try

Copy vocabulary

US / traɪ /

UK / traɪ /

A1
  • noun
  • Act of putting the ball over the rugby goal line
  • verb
  • To make an effort, to attempt to do something
  • To examine someone or something in a court of law
  • To test to see if it is good or you like it
  • To make a person go through hardship; test
  • To examine something to see if it works

actually

Copy vocabulary

US / ˈæktʃuəli /

UK / ˈæktʃuəli /

A1
  • adverb
  • Used to add new (often different) information

ideal

Copy vocabulary

US / aɪˈdi:əl /

UK / aɪˈdiəl, aɪˈdil /

A2
  • adjecitve
  • Exactly right; could not be better
  • Which is thought of as being perfect

speak

Copy vocabulary

US / spi:k /

UK / spik /

A1
  • verb
  • To be able to use a certain language
  • To use words to tell information, express thoughts

sort

Copy vocabulary

US / sɔ:t /

UK / sɔrt /

A1
  • noun
  • Group or class of similar things or people
  • verb
  • To organize things by putting them into groups
  • To deal with things in an organized way

capture

Copy vocabulary

US / 'kæptʃə(r) /

UK / ˈkæptʃɚ /

B1
  • verb
  • To attract and hold e.g. interest, attention
  • To record, tape, or film something
  • To catch and prevent from being free
  • To take control of a place or object by force

fairly

Copy vocabulary

US / 'feəlɪ /

UK / ˈfɛrli /

A2
  • adverb
  • Quite; pretty; between very and a little
  • In a manner that is right and acceptable

guess

Copy vocabulary

US / ɡes /

UK / ɡɛs /

A1
  • noun
  • Answer given when you don't know if it is correct
  • verb
  • To give an answer without knowing if it is correct

will

Copy vocabulary

US / wɪl /

UK / wɪl /

A1
  • noun
  • Desire or choice of someone
  • Document saying who gets your money when you die
  • Strong desire to do something; determination
  • Desire to do something; strong wish to do
  • other
  • Used with verbs to express the future
  • verb
  • To leave property to someone after your death
  • To use mental effort to make something happen
  • Am (is, are) likely to do
  • To influence someone to do something
  • To make something happen by strongly wanting it

weather

Copy vocabulary

US / 'weðə(r) /

UK / ˈwɛðɚ /

A1
  • noun
  • Whether it is raining, sunny, cold etc. outside
  • verb
  • To successfully deal with a difficult situation
  • To erode or become damaged due to the environment

gravity

Copy vocabulary

US / ˈgrævəti /

UK / ˈɡrævɪti /

B1
  • noun
  • (Of a situation) extreme seriousness
  • Force making things fall towards the ground

strike

Copy vocabulary

US / straɪk /

UK / straɪk /

A2
  • noun
  • A punch or hit
  • Fact of not hitting the ball when playing baseball
  • Refusal to work to get more pay, protest something
  • verb
  • To hit something
  • To suddenly become (e.g. rich)
  • To have an idea occur to you

sure

Copy vocabulary

US / ʃʊə(r) /

UK / ʃʊr /

A1
  • adjecitve
  • Having no doubts about something
  • Have confidence in your own words or actions
  • Firmly established or held; being firm or stable
  • Being correct or true
  • adverb
  • What you say to agree willingly

bar

Copy vocabulary

US / bɑ:(r) /

UK / bɑ:r /

A2
  • noun
  • Piece of (soap, chocolate etc.)
  • Professional organization of lawyers and judges
  • String of musical notes
  • Place to meet friends and buy alcoholic drinks
  • Long solid round piece of metal shaped like a pipe
  • verb
  • To prevent entry, exit or an action

drink

Copy vocabulary

US / drɪŋk /

UK / drɪŋk /

A1
  • noun
  • A liquid that you put in your mouth
  • verb
  • To put water in your body through your mouth

mostly

Copy vocabulary

US / ˈməʊstli /

UK / ˈmoʊstli /

A2
  • adverb
  • In large part; mainly or chiefly

caribbean

Copy vocabulary

US / ˌkærɪˈbi:ən /

UK / ˌkærəˈbiən, kəˈrɪbiən /

A1
  • adjecitve
  • Concerning the culture and people of Caribbean

footage

Copy vocabulary

US / ˈfʊtɪdʒ /

UK / ˈfʊtɪdʒ /

B2
  • noun
  • A certain amount of film or video of something
  • Measurement in feet

borealis

Copy vocabulary

US / ˌbɔːriˈeɪlɪs /

UK / ˌbɔːriˈeɪlɪs /

A1
  • noun

overcast

Copy vocabulary

US / ˌəʊvəˈkɑːst /

UK / ˌoʊvərˈkæst /

C1
  • adjecitve
  • (Sky) being covered by clouds

something

Copy vocabulary

US / ˈsʌmθɪŋ /

UK / ˈsʌmθɪŋ /

A1
  • adverb
  • In some degree or measure
  • noun
  • a person or thing of some value or consequence
  • pronoun
  • Thing that is not yet known or named
  • Approximately

from

Copy vocabulary

US / frəm /

UK / frʌm, frɑm,frəm /

A1
  • preposition
  • Starting at a particular place, time or level

out

Copy vocabulary

US / aʊt /

UK / aʊt /

A1
  • adverb
  • No longer stylish (e.g. fashion)
  • Away from home, business, or the usual place
  • In a direction/movement away from inside or center
  • noun
  • Act when a batter cannot continue playing
  • verb
  • To tell people a secret

any

Copy vocabulary

US / 'enɪ /

UK / ˈɛni /

A1
  • adjecitve
  • One, or some, no matter which
  • pronoun
  • One (thing) of many; some

come

Copy vocabulary

US / kʌm /

UK / kʌm /

A1
  • verb
  • To arrive at a place
  • (Of mail) to be delivered
  • To move toward someone; go with someone
  • To reach a certain point or state

layer

Copy vocabulary

US / ˈleiə /

UK / ˈleɚ /

B1
  • noun
  • One of several sheets of a material or object
  • verb
  • To put things one on top of another

think

Copy vocabulary

US / θɪŋk /

UK / θɪŋk /

A1
  • verb
  • To have an idea about something without certainty
  • To have an idea, opinion or belief about something

picture

Copy vocabulary

US / 'pɪktʃə(r) /

UK / ˈpɪktʃɚ /

A1
  • noun
  • General situation or state of being
  • Mental image of what something is or looks like
  • Movie; film
  • Painting, drawing or photograph on paper or screen
  • verb
  • To understand or imagine something
  • To imagine someone or something in an image

radiation

Copy vocabulary

US / ˌreɪdiˈeɪʃn /

UK / ˌrediˈeʃən /

B1
  • noun
  • Energy transmitted as rays, waves or particles
  • Process of emitting something in waves
  • Harmful waves of energy from nuclear activity

where

Copy vocabulary

US / hwɛə /

UK / hwɛr, wɛr /

A1
  • conjunction
  • At or in the place which
  • In whatever place
  • pronoun
  • Word you use to ask the location of something

electron

Copy vocabulary

US / ɪˈlektrɒn /

UK / ɪˈlektrɑ:n /

B2
  • noun
  • A negatively charged particle

photon

Copy vocabulary

US / ˈfəʊtɒn /

UK / ˈfoʊtɑ:n /

B2
  • noun
  • Particle with energy but no mass, electric charge

put

Copy vocabulary

US / pʊt /

UK / pʊt /

A1
  • phrasal verb
  • to make a light stop shining by pressing or moving a switch
  • verb
  • To move or place a thing in a particular position
  • To rate something in importance or value
  • To write or say something in a certain manner

release

Copy vocabulary

US / rɪ'li:s /

UK / rɪ'li:s /

A2
  • noun
  • Act of freeing someone from a duty or burden
  • Introduction of a new product, film, book, etc.
  • Relief from sadness, suffering or trouble
  • Act of freeing from a jail, cage, prison, etc.
  • verb
  • To free someone from a responsibility or burden
  • To allow a film, music etc. to be sold/distributed
  • To allow to leave a jail, cage, etc.; let out
  • To let go of something you are holding

and

Copy vocabulary

US / ənd /

UK / ənd, ən,ænd /

A1
  • conjunction
  • Used to refer to two or more things
  • Plus; in addition; on top of that
  • Used to introduce an action that follows another

guy

Copy vocabulary

US / ɡaɪ /

UK / ɡaɪ /

A1
  • noun
  • Man; boy; any person

lot

Copy vocabulary

US / lɒt /

UK / lɑt /

A1
  • noun
  • What happens to a person in life from chance; fate
  • A group of people seen together
  • Item for sale at an auction
  • Small area of land used for a purpose e.g. parking

major

Copy vocabulary

US / 'meɪdʒə(r) /

UK / ˈmedʒɚ /

A2
  • adjecitve
  • Main league; esp. referring to American baseball
  • Important, serious, or large in scope, size
  • noun
  • High-ranking officer in the army
  • Main subject you study at university
  • verb
  • To study a particular subject at university

can

Copy vocabulary

US / kæn /

UK / kən,kæn /

A1
  • noun
  • A metal container for storing food
  • other
  • Able to; have the skill to; have the time to
  • verb
  • To have permission to
  • To be possible to do
  • To preserve food by sealing it in a metal container

nearly

Copy vocabulary

US / ˈniəli /

UK / ˈnɪrli /

A1
  • adverb
  • Not completely; almost

pole

Copy vocabulary

US / pəʊl /

UK / pol /

B1
  • noun
  • One of two opposite ideas, qualities or positions
  • Most northern or most southern point on a planet
  • A long, narrow piece of metal or wood
  • One of two opposite magnetic forces
  • An upright long thin structure to support things
  • verb
  • To move a boat with a stick or pole

tough

Copy vocabulary

US / tʌf /

UK / tʌf /

A2
  • adjecitve
  • (Of food) difficult to chew or bite through
  • Very difficult to do or deal with
  • Having strict standards
  • Being firm and not easily bent or broken
  • Being strong physically or mentally
  • Being difficult to persuade
  • Capable of violence

towards

Copy vocabulary

US / tə'wɔ:dz /

UK / 'təuədz, twɔ:dz /

A1
  • preposition
  • In the direction of someone or something

not

Copy vocabulary

US / nɒt /

UK / nɑt /

A1
  • adverb
  • Word indicating the negative
  • (Used to form the negative of verbs)

our

Copy vocabulary

US / 'aʊə(r) /

UK / aʊr /

A1
  • determiner
  • Belonging to us

quite

Copy vocabulary

US / kwaɪt /

UK / kwaɪt /

A1
  • adverb
  • Not very; fairly
  • Very; In a complete or total manner

powerful

Copy vocabulary

US / ˈpauəful /

UK / ˈpaʊəfəl /

A2
  • adjecitve
  • Having control or influence over
  • Having a lot of physical force, energy, strength

luck

Copy vocabulary

US / lʌk /

UK / lʌk /

A1
  • noun
  • Accidental way things happen, often good things

really

Copy vocabulary

US / ˈri:əli /

UK / ˈriəˌli, ˈrili /

A1
  • adverb
  • Used to stress something that is said; definitely
  • In a true or accurate manner
  • Very

would

Copy vocabulary

US / wʊd /

UK / wʊd /

A1
  • other
  • Used to indicate something imagined
  • Used to ask or request something politely
  • Verb used to indicate possibility, request etc.
  • Used to indicate a preference
  • Used to indicate a reaction
  • Indicates something that occurred repeatedly
  • Used to indicate willingness or ability to do

hazy

Copy vocabulary

US / 'heɪzɪ /

UK / ˈhezi /

B2
  • adjecitve
  • Unclear, dark, or clouded due to dust, smoke etc.
  • Not being exact, certain, or clear

mexico

Copy vocabulary

US / 'meksɪkəʊ /

UK / 'meksɪkoʊ /

A1
  • proper noun
  • A country in southwestern North America, with extensive coastlines on the Gulf of Mexico and the Pac

cloud

Copy vocabulary

US / klaʊd /

UK / klaʊd /

A1
  • noun
  • A mass of smoke or mist hanging in the air
  • verb
  • To confuse the mind/judgment of a person
  • (Of the sky) to get darker and fill with clouds
  • To make (glass, etc.) difficult to see through
  • To make an activity less pleasant or enjoyable
  • (Of person's face, etc.) to show worry/anger

cloudy

Copy vocabulary

US / 'klaʊdɪ /

UK / ˈklaʊdi /

A2
  • adjecitve
  • With many clouds; without exact form or detail
  • Without exact form or detail; not clear

neuron

Copy vocabulary

US / ˈnʊərˌɔn, ˈnjʊər- /

UK / ˈnʊrˌɑn, ˈnjʊr- /

B2
  • noun
  • A nerve cell

but

Copy vocabulary

US / bət /

UK / bʌt,bət /

A1
  • conjunction
  • Used before you say something different, opposite

give

Copy vocabulary

US / ɡɪv /

UK / ɡɪv /

A1
  • noun
  • Degree of flexibility in something, a material
  • verb
  • To hand over or present something to someone
  • To cause someone to have or experience something

deal

Copy vocabulary

US / di:l /

UK / dil /

A1
  • verb
  • To cope with something - usually troubles
  • To give (something bad e.g. news) to
  • To buy and sell illegal drugs
  • To give out (cards, etc.) to; distribute
  • To do business with someone or to sell products

magnetic

Copy vocabulary

US / mægˈnetɪk /

UK / mæɡˈnɛtɪk /

B2
  • adjecitve
  • Having the properties of a magnet; able to attract
  • Being able to attract
  • Having great power to attract attention, interest

spacecraft

Copy vocabulary

US / ˈspeɪskrɑ:ft /

UK / ˈspeɪskræft /

C2
  • noun
  • Vehicle capable of traveling to outer space

essentially

Copy vocabulary

US / ɪˈsenʃəli /

UK / ɪˈsenʃəli /

A2
  • adverb
  • Basically; (said when stating the basic facts)

excite

Copy vocabulary

US / ɪk'saɪt /

UK / ɪkˈsaɪt /

A2
  • verb
  • To make something or someone become more active
  • To make someone feel happy, interested or eager

down

Copy vocabulary

US / daʊn /

UK / daʊn /

A1
  • adjecitve
  • Being sad, sick, or unhappy
  • Not operating, working, or functioning as expected
  • adverb
  • In a sitting or lying position
  • Towards or on the ground, floor, or bottom
  • Written or copied onto a piece of paper or book
  • noun
  • A period of play in American Football
  • The soft, smooth hairs that cover a bird's body
  • preposition
  • Along something's path, course, or direction
  • Going from a higher position to a lower position
  • verb
  • To eat or drink very quickly and without stopping

must

Copy vocabulary

US / məst /

UK / mʌst /

A1
  • noun
  • Something that is necessary or required
  • other
  • (Used to state that something ought to be true)
  • Used to say something is required or necessary

then

Copy vocabulary

US / ðen /

UK / ðɛn /

A1
  • adverb
  • A time that is not now
  • Following another thing in time or arrangement
  • Following on reasonably from what was just stated
  • At that time, not now

case

Copy vocabulary

US / keɪs /

UK / kes /

A1
  • noun
  • Container used to carry things, e.g. clothes
  • Set of facts about a crime
  • Set of facts about an event
  • Example or instance of something
  • verb
  • To find out about a place, as in planning to steal

deflect

Copy vocabulary

US / dɪ'flekt /

UK / dɪˈflɛkt /

B2
  • verb
  • To cause to turn in a different direction
  • To prevent or avoid something having an effect on

energy

Copy vocabulary

US / 'enədʒɪ /

UK / ˈɛnədʒi /

A2
  • noun
  • Physical or mental strength

mean

Copy vocabulary

US / mi:n /

UK / min /

A1
  • adjecitve
  • Being good at
  • Nasty; unkind
  • Not liking to spend money; cheap; stingy
  • noun
  • Average of a set of numbers
  • verb
  • To express a particular idea or thought
  • To intend to do something in particular
  • To have a particular meaning or value

find

Copy vocabulary

US / faɪnd /

UK / faɪnd /

A1
  • noun
  • Object discovered by chance
  • Things that have been discovered from searching
  • verb
  • To become aware of something that is happening
  • To discover or meet by chance
  • To decide if someone is guilty of a crime, or not
  • To learn through study, research, or effort
  • To discover something by looking for it

about

Copy vocabulary

US / ə'baʊt /

UK / əˈbaʊt /

A1
  • adverb
  • To be ready to; going to
  • Nearly; approximately; roughly
  • Near; next to; close to
  • In every direction; in the area of
  • preposition
  • Concerning or of (a topic)

grandmother

Copy vocabulary

US / ˈgrænmʌðə(r) /

UK / ˈɡrændˌmʌðɚ, ˈɡræn- /

B2
  • noun
  • Your mother or father's mother

like

Copy vocabulary

US / laɪk /

UK / laɪk /

A1
  • adjecitve
  • Being equal in status or kind to something else
  • Similar; the same
  • adverb
  • For example
  • preposition
  • Used as a filler; used to ad emphasis
  • In a way similar to the way something is done
  • Such as; for example
  • verb
  • To want to
  • To find something pleasing; to prefer something

people

Copy vocabulary

US / 'pi:pl /

UK / ˈpipəl /

A1
  • noun
  • Persons sharing culture, country, background, etc.
  • Men, Women, Children

that

Copy vocabulary

US / ðæt /

UK / ðæt, ðət /

A1
  • adjecitve
  • The person or thing being talked about
  • Used to identify something both the speakers know
  • adverb
  • Used to reinforce adjectives and adverbs
  • To such a degree
  • conjunction
  • Used to connect a noun clause
  • Used to introduce an adverbial clause
  • Used to introduce a noun clause
  • determiner
  • Used as a noun to refer to something
  • pronoun
  • Referring an object far away
  • Used to refer to the relative pronoun ‘which’

what

Copy vocabulary

US / wɒt /

UK / hwɑt, hwʌt, wɔt, wʌt,hwət, wət /

A1
  • pronoun
  • Thing or things that; the same kind as
  • Used to emphasize something you are about to say
  • adjecitve
  • Used to refer to a particular amount, or number
  • Used to place emphasis on a particular quality
  • adverb
  • To a certain degree
  • determiner
  • Question words used for asking for information
  • exclamation
  • Used to express excitement, shock, or surprise
  • Used to ask people to repeat something they said

get

Copy vocabulary

US / ɡet /

UK / ɡɛt /

A1
  • verb
  • To become affected by illness or disease
  • To begin to feel or understand an emotion or idea
  • To send or bring someone or something home, etc.
  • To go somewhere to obtain something
  • To (cause to) do a particular thing
  • To obtain, receive or be given something
  • To currently have
  • To prepare for use
  • To understand something being said or read

exciting

Copy vocabulary

US / ɪkˈsaɪtɪŋ /

UK / ɪkˈsaɪtɪŋ /

A2
  • adjecitve
  • Creating interest, happiness or pleasurable fear
  • verb
  • To cause a reaction; make active
  • To make someone feel happy, interested or eager

hit

Copy vocabulary

US / hɪt /

UK / hɪt /

A1
  • noun
  • A planned killing, usually for money
  • Song, movie etc. that is successful
  • When someone strikes someone or something
  • Time when a player makes contact with the ball
  • Time when a website is accessed
  • verb
  • To have a negative impact on a person/place/thing
  • To press something, such as a button or switch
  • To suddenly realize the importance of something
  • To move your hand, a bat, etc. against with force
  • To fight, attack or damage something or someone
  • To arrive at a specific place, level, or goal
  • To make contact with the ball in a game or sport

plasma

Copy vocabulary

US / ˈplæzmə /

UK / ˈplæzmə /

B2
  • noun
  • Substance in which the blood cells are carried
  • Gas-like substance with little electric charge

happen

Copy vocabulary

US / 'hæpən /

UK / ˈhæpən /

A1
  • verb
  • To take place or occur

thereafter

Copy vocabulary

US / ˌðeərˈɑ:ftə(r) /

UK / ðɛrˈæftɚ /

B1
  • adverb
  • Coming after

yeah

Copy vocabulary

US / jeə /

UK / ˈjɛə, ˈjæə, jɛ- /

A1
  • exclamation
  • Another way of saying 'yes'

hydrogen

Copy vocabulary

US / ˈhaɪdrədʒən /

UK / ˈhaɪdrədʒən /

B1
  • noun
  • Lightest of all chemical elements
  • Subtitles section
  • Welcome to Alaska.
  • I'm just outside of Fairbanks and I'm trying to find the northern lights, the Aurora Borealis.
  • But the conditions haven't been ideal because tonight it's a bit cloudy, a bit hazy, and we've got a moon out which is nearly full, so it makes it very difficult to spot these northern lights.
  • So what are we actually looking at up there with the Aurora?
  • The electromagnetic fields working through the gravity, you know, and the particles that work off of that.
  • What do you have to have happen in order to get those lights?
  • Cold.
  • You're going to be looking at solar activities.
  • It has to do with solar flares as the flares are coming.
  • I know it has to be something with the Sun and discharge and its solar flare.
  • The Sun has just put on quite a show.
  • Take a look at these amazing pictures captured by a NASA spacecraft yesterday.
  • It's a powerful solar flare shooting superheated particles and plasma deep into space.
  • No one knows what's really going on those pictures.
  • They just look cool.
  • So what sort of stuff is coming from the Sun?
  • I believe it's solar radiation.
  • Other than that, I don't know.
  • Photons and, you know, neurons, superfluidity of neurons.
  • What's the Sun made of, mostly?
  • Hydrogen, I believe.
  • Yeah.
  • So if the Sun spits out some of that stuff, it would be...
  • What is a hydrogen atom?
  • What's it made of?
  • Just hydrogen, neutrons, electrons, you know.
  • In the case of hydrogen, it's the simplest atom.
  • It's just a proton and an electron.
  • Okay.
  • That's it.
  • So when we're talking about stuff coming from the Sun, we're talking about streams of protons and electrons.
  • Okay.
  • There's stuff coming from the Sun.
  • Yes.
  • And then what does it do?
  • It lights up.
  • They're just there.
  • Yeah, they just happen.
  • Well, I've had a little bit of luck and I've been trying to shoot them, so I'll put up some of that footage so you can check it out.
  • And you can think about these particles that must be streaming in from the Sun, colliding with our upper atmosphere, and then exciting it.
  • And so it releases that light when it de-excites.
  • Why does it come to Alaska and not, say, Hawaii or the Caribbean?
  • It's the northern lights.
  • It is the northern...
  • Well...
  • Why are you guys so special?
  • I'm not sure, honestly.
  • Like, it's been seen down in, like, Mexico and stuff.
  • It's, like, the Reds have been seen down in Mexico.
  • I've actually seen it in Mexico by my...
  • Where my grandmother lives.
  • I think it just has to do with the northern hemisphere and how much, like, little less Sun we get, so you can see it more.
  • I'm sure it happens in the southern hemisphere.
  • You just have a lot of light down there.
  • Like, their sky is brighter at night?
  • Well...
  • Oh, God.
  • I'm just asking.
  • I don't know.
  • I don't know.
  • It has to do with magnetic fields.
  • The closer you get to the magnetic fields, the more the lights you're able to see.
  • And then, yeah, you read about the magnetosphere deflects them around towards the poles, and they hit the atmosphere, and they excite the atmosphere, and when it de-excites, it's giving off that light.
  • So I'm here in Fairbanks with T. Neil Davis, and thank you for speaking to me today.
  • You're welcome.
  • Alright, so we were out looking for the aurora.
  • I guess one major question that a lot of people would have is, what is it?
  • An aurora is the result of charged particles coming down the magnetic, long magnetic field lines, which is essentially vertical here.
  • And those high-speed particles then strike the gases in the upper atmosphere and impart energy to those gases, excite the atoms and molecules.
  • Fairly shortly thereafter, the atoms and molecules de-excite by giving off quantum light, and that's what we see.
  • What about the weather?
  • You know, last night it seemed like it was a bit overcast, or there was some cloud up there.
  • Does that also hinder...?
  • Oh, yeah.
  • It wasn't a thick cloud layer, but there just seemed to be a bit of a haze.
  • Yeah.
  • We had the moon out.
  • Oh, well, then you're really in trouble.
  • Yeah, with the moon out and a little haze, then it's pretty tough to see the aurora.
  • So do you have any advice for us?
  • How do we deal with conditions like that?
  • I mean, that's it.
  • Go to a bar and have a drink, I guess.