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The Moon Illusion

Video vocabulary

towards

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US / tə'wɔ:dz /

UK / 'təuədz, twɔ:dz /

A1
  • preposition
  • In the direction of someone or something

can

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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

but

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US / bət /

UK / bʌt,bət /

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

compare

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US / kəm'peə(r) /

UK / kəmˈpɛr /

A1
  • verb
  • To consider how similar and different things are

sight

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US / saɪt /

UK / saɪt /

A2
  • noun
  • Things or people that one can see
  • Range or distance that someone can see
  • Famous places often visited by tourists
  • Sense that allows you to see
  • Act of seeing someone or something
  • verb
  • To aim (a gun) at something to get your range
  • To see something rare or unusual

measure

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US / ˈmeʒə(r) /

UK / ˈmɛʒɚ /

A1
  • noun
  • Plan to achieve a desired result
  • Tool used to calculate the size of something
  • verb
  • To determine the value or importance of something
  • To calculate size, weight or temperature of

now

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US / naʊ /

UK / naʊ /

A1
  • adverb
  • At the present time or moment
  • Right away or in the next possible moment
  • Used to refer to something that just happened
  • Time between the present and a moment in the past
  • conjunction
  • Resulting from or because of something

against

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US / əˈgenst /

UK / əˈɡenst /

A1
  • preposition
  • In physical contact with, as for support; next to
  • In opposition to; disagreeing with

video

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US / 'vɪdɪəʊ /

UK / ˈvɪdiˌo /

A2
  • adjecitve
  • Of a moving film, with sound
  • noun
  • Recording capturing action with sound
  • verb
  • To make a moving film of, with sound

want

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US / wɔnt /

UK / wɑnt, wɔnt /

A1
  • noun
  • Something you desire or wish for
  • State or condition of poverty
  • verb
  • To desire or wish for something; hope for a thing

subscribe

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US / səb'skraɪb /

UK / səbˈskraɪb /

B1
  • verb
  • To regularly pay to receive a service

register

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US / 'redʒɪstə(r) /

UK / ˈrɛdʒɪstɚ /

A2
  • noun
  • Till; machine used add up things you buy
  • Range of notes of a person's (singing) voice
  • verb
  • To record your name on an official list; sign up
  • To show an amount on a measurement device
  • (Of feelings) to show or make visible

same

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US / seɪm /

UK / sem /

A1
  • adjecitve
  • Being equal in quality and amount
  • Identical; not different
  • Not changing; constant

facebook

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US / 'feɪsbʊk /

UK / 'feɪsbʊk /

A1
  • intransitive verb
  • Spend time using the social media application Facebook.

explanation

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US / ˌekspləˈneɪʃn /

UK / ˌɛkspləˈneʃən /

A2
  • noun
  • Details or reasons given to make something clear

become

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US / bɪ'kʌm /

UK / bɪˈkʌm /

A1
  • verb
  • To begin to be; grow to be; develop into
  • To be suitable for a particular job or role

size

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US / saɪz /

UK / saɪz /

A1
  • noun
  • How big or small a thing is
  • Standard measurements for clothing, shoes
  • verb
  • To make something to fit a particular measurement
  • To organize or group from small to large

maybe

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US / ˈmeɪbi /

UK / ˈmebi /

A1
  • adverb
  • Possibly but not certainly; perhaps

our

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US / 'aʊə(r) /

UK / aʊr /

A1
  • determiner
  • Belonging to us

not

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US / nɒt /

UK / nɑt /

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

weekly

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US / 'wi:klɪ /

UK / ˈwikli /

A2
  • adverb
  • Happening, published, or done once a week
  • noun
  • Magazine or newspaper published once a week

perception

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US / pəˈsepʃn /

UK / pɚˈsɛpʃən /

B1
  • noun
  • Way in which one sees or understands something

effect

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US / ɪ'fekt /

UK / ɪˈfɛkt /

A1
  • noun
  • An advantage, benefit
  • Change brought about by a cause; result

cloud

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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

just

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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)

though

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US / ðəu /

UK / ðo /

A1
  • adverb
  • Although, despite the fact that

leg

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US / leɡ /

UK / lɛɡ /

A1
  • noun
  • Part of the body from the hips down
  • The piece of furniture that touches the ground

fact

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US / fækt /

UK / fækt /

A1
  • noun
  • Something that is known or proved to be true

earth

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US / ɜ:θ /

UK / ɚθ /

A1
  • noun
  • Wire connecting an electrical device to the ground
  • The planet we live on
  • Soil in which we grow plants

vast

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US / vɑ:st /

UK / væst /

A2
  • adjecitve
  • Being very large in size or amount

question

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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

object

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US / 'ɒbdʒɪkt /

UK / ˈɑbdʒɪkt /

A2
  • noun
  • Something you can see or touch, but is not alive
  • Goal or purpose of a particular plan or activity
  • The thing that the action of a verb acts upon
  • verb
  • To disagree; to protest against an idea or plan

convinced

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US / kənˈvɪnst /

UK / kənˈvɪnst /

A2
  • adjecitve
  • Persuaded to feel sure of something
  • verb
  • To persuade someone, or make them feel sure

test

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US / test /

UK / test /

A1
  • noun
  • A medical examination
  • Action to establish the truth or nature of
  • Examination; questions to measure knowledge
  • verb
  • To be given a medical examination
  • To try to establish the truth or nature of
  • To ask a series of questions to measure knowledge

exact

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US / ɪɡ'zækt /

UK / ɪɡˈzækt /

A2
  • adjecitve
  • Completely correct; accurate; specific
  • verb
  • To get something, sometimes using force

ask

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US / ɑ:sk /

UK / æsk /

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

time

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US / taɪm /

UK / taɪm /

A1
  • noun
  • Speed at which music is played; tempo
  • Point as shown on a clock, e.g. 3 p.m
  • Number of hours, minutes needed to do something
  • Occasion when something happens
  • Period or occasion that something occurred
  • Period in history or the past
  • Something measured in minutes, hours, days, etc.
  • How long an event takes; duration
  • verb
  • To check speed at which music is performed
  • To choose a specific moment to do something
  • To measure how long an event takes, e.g. a race
  • To schedule something to occur at a specific moment

why

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US / waɪ /

UK / hwaɪ, waɪ /

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

through

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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

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US / fə(r) /

UK / fɔr,fə /

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

large

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US / lɑ:dʒ /

UK / lɑ:rdʒ /

A1
  • adjecitve
  • Big; of great size; broad, tall, wide, or fat

only

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US / ˈəunli /

UK / ˈonli /

A1
  • adverb
  • Just one; just that amount or thing; not more than
  • Not very important or serious
  • Just that type of thing, person
  • Short time ago; not before a certain time
  • conjunction
  • Except; but

familiar

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US / fəˈmɪliə(r) /

UK / fəˈmɪljɚ /

A2
  • adjecitve
  • Well-known or easily recognized

back

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US / bæk /

UK / bæk /

A1
  • adjecitve
  • Farthest from the front e.g. in a classroom
  • adverb
  • Have returned to a place you were before
  • noun
  • The part of a chair that the upper body leans upon
  • Location at the rear of something
  • The reverse of side something
  • Area on the rear of your body
  • verb
  • To bet money on something
  • To go backwards in a car
  • To support and encourage someone or some cause

and

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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

trick

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US / trɪk /

UK / trɪk /

A2
  • adjecitve
  • Not reliable; likely to deceive you
  • noun
  • Act of trying to fool someone
  • Quick or skillful way of doing something
  • Something done to make someone laugh
  • verb
  • To fool someone in order to obtain a result
  • To playfully tease or fool to make someone laugh

tree

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US / tri: /

UK / tri /

A1
  • noun
  • Tall green plants in a forest

vastness

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US / vɑ:stnəs /

UK / ˈvæstnɪs /

B1
  • noun
  • An exceedingly great area or degree

call

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US / kɔ:l /

UK / kɔl /

A1
  • noun
  • A order or request for action
  • The sound an animal makes, often when in danger
  • A correct prediction, e.g. a decision in a game
  • A short visit to a place or person
  • A decision by a referee or umpire in a game
  • verb
  • To make a request or order for action
  • (Animal) to make sounds to warn of danger
  • To announce the date of an election
  • To make a judgment about something
  • To give someone or something a name
  • To guess in advance the result or outcome
  • To visit a place or person for a short time
  • To phone someone
  • To speak, announce or shout in a loud voice

over

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US / 'əʊvə(r) /

UK / ˈovɚ /

A1
  • adverb
  • Finished; no longer happening
  • Towards the ground/away from a standing position
  • noun
  • A set of six consecutive balls bowled in cricket
  • other
  • Finished
  • preposition
  • Showing the relation when a thing is above another
  • On or covering something
  • Above or across something
  • More than you need
  • From one side to the other
  • In the direction of; toward

out

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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

horizon

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US / həˈraɪzn /

UK / həˈraɪzn /

B1
  • noun
  • Line where the earth or sea meets the sky
  • Limits of someone's experience or understanding

any

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US / 'enɪ /

UK / ˈɛni /

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

visual

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US / 'vɪʒʊəl /

UK / ˈvɪʒuəl /

A2
  • adjecitve
  • Of or relating to vision
  • noun
  • Pictures/images used to help audience understand

photo

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US / ˈfəʊtəʊ /

UK / ˈfoʊtoʊ /

A1
  • noun
  • Short for photograph; a picture taken by a camera

compensate

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US / ˈkɒmpenseɪt /

UK / ˈkɑ:mpenseɪt /

A2
  • verb
  • To give (money) to as a form of correcting a loss

suffer

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US / 'sʌfə(r) /

UK / ˈsʌfɚ /

A2
  • verb
  • To experience pain, illness, or injury

know

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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

furthermore

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US / ˌfɜ:ðəˈmɔ:(r) /

UK / ˌfɜ:rðərˈmɔ:r /

B1
  • adverb
  • In addition to what has been said

thumbnail

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US / 'θʌmneɪl /

UK / ˈθʌmˌnel /

A1
  • noun
  • Nail of the thumb

with

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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

retina

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US / ˈretɪnə /

UK / ˈretənə /

B2
  • noun
  • Part of the eye that senses light

process

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US / prə'ses /

UK / ˈprɑsˌɛs, ˈproˌsɛs /

A2
  • noun
  • Dealing with official forms in the way required
  • Set of changes that occur slowly and naturally
  • verb
  • To organize and use data in a computer
  • To deal with official forms in the way required
  • To prepare by treating something in a certain way
  • To adopt a set of actions that produce a result
  • To convert by putting something through a machine

twitter

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US / ˈtwɪtə(r) /

UK / ˈtwɪtɚ /

C2
  • noun
  • An online messaging system
  • verb
  • To make small chattering sounds, like some birds

see

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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)

have

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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

clear

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US / klɪə(r) /

UK / klɪr /

A1
  • adjecitve
  • Empty; without anything in it or on it
  • Being certain and without doubt
  • Being without any streaks, spots, or cracks
  • Easy to understand; well-explained; obvious
  • adverb
  • Completely; entirely; through the whole of
  • Away from; free from
  • verb
  • To recover from or remove a problem
  • To get rid of the entire contents of
  • To give permission for something to happen
  • To make a place or surface empty by removing
  • To prove that someone is not guilty or to blame

notice

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US / 'nəʊtɪs /

UK / ˈnotɪs /

A1
  • noun
  • Time by when you must leave, e.g. if you are fired
  • Paper with an announcement, e.g. pinned to a board
  • verb
  • To become aware by sight, touch, or hearing

while

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US / waɪl /

UK / hwaɪl, waɪl /

A1
  • conjunction
  • In spite of the fact that; although
  • During the time that; at the same time
  • noun
  • Short amount of time

reside

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US / rɪˈzaɪd /

UK / rɪˈzaɪd /

B1
  • verb
  • To live in; dwell; to be present

burn

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US / bɜ:n /

UK / bɚn /

A1
  • noun
  • Damage from fire or heat
  • verb
  • To destroy with fire
  • To feel pain and heat
  • To use as fuel for a fire to make light or heat
  • To overcook food with too much heat it goes black

use

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US / ju:s /

UK / ju:s /

A1
  • noun
  • Ability to employ something
  • Need to enable it to work
  • Permission to do something with something
  • Act of spending money
  • Operation of a machine for its function
  • verb
  • To have; to eat, drink, consume etc.
  • To need to operate or work
  • To operate a machine, e.g. a computer
  • To treat a person badly
  • To do something with, for a task or purpose

debate

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US / dɪ'beɪt /

UK / dɪˈbet /

A2
  • noun
  • General public discussion of a topic
  • A formal event where two sides discuss a topic
  • verb
  • To consider options before making a decision
  • To take part in a formal discussion

point

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US / pɔɪnt /

UK / pɔɪnt /

A1
  • noun
  • An item to be discussed
  • Small spot or dot
  • Fact or detail
  • Feature of something
  • The size of the text on a page or screen
  • A certain time or stage in a process
  • Certain position in time or space
  • Idea or fact you try to convince people about
  • Measurement of scores in a game, sport
  • Sharp end of something, e.g. a pen or pin
  • verb
  • To face a certain direction, e.g. north
  • To indicate something with your finger to others

ever

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US / 'evə(r) /

UK / ˈɛvɚ /

A1
  • adverb
  • At any time; at all times in the future

will

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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

surely

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US / ˈʃʊəli /

UK / ˈʃʊrli /

A1
  • adverb
  • With certainty; definitely

many

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US / 'menɪ /

UK / ˈmɛni /

A1
  • determiner
  • Used to refer a large number of things

appear

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US / ə'pɪə(r) /

UK / əˈpɪr /

A1
  • verb
  • To be seen, become visible; come into sight
  • To seem to be
  • To act in a play, movie, or be mentioned in media

science

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US / 'saɪəns /

UK / ˈsaɪəns /

A2
  • noun
  • Study of the physical world, based on facts

try

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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

small

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US / smɔ:l /

UK / smɔl /

A1
  • adjecitve
  • Little in size; not big
  • (Of letters) not written in capital letters
  • Being insignificant or minor
  • (Of a business) with few people or things; local
  • (Of voice) being soft and quiet
  • (Of a child) being young

surround

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US / səˈraʊnd /

UK / səˈraʊnd /

A2
  • other
  • To be closely connected to and have an effect on
  • verb
  • To be all the way around something
  • To be closely connected to and have an effect on
  • To move closer on all sides of something

optical

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US / ˈɒptɪkl /

UK / ˈɑptɪkəl /

B1
  • adjecitve
  • Concerning vision or helping people see
  • Concerning light, lenses or cameras

turn

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US / tɜ:n /

UK / tɚn /

A1
  • noun
  • Place where changing of direction happens
  • Your time or chance to perform a duty
  • Your chance to play or do in say a game
  • Unexpected change, as in the weather
  • verb
  • To become (a particular age)
  • To become a different quality, color, etc.
  • To change the direction of something, e.g. a car
  • To move in an opposite direction or position
  • To shape metal with a spinning tool

other

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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

suggest

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US / səˈdʒest /

UK / səɡˈdʒɛst, səˈdʒɛst /

A1
  • verb
  • To mention something that could be done; propose

phenomenon

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US / fə'nɒmɪnən /

UK / fɪˈnɑməˌnɑn, -nən /

B1
  • noun
  • Unusual event, fact that can be studied
  • Interesting or unusual person, group
  • something that exists and can be seen, felt, tasted, etc., especially something unusual or interesti

illusion

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US / ɪ'lu:ʒn /

UK / ɪˈluʒən /

B2
  • noun
  • Idea, image or impression that is not correct

you

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US / jʊ /

UK / ju /

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

less

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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

differently

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US / 'dɪfrəntlɪ /

UK / ˈdɪfərəntlɪ /

A2
  • adverb
  • In another and different manner

answer

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US / 'ɑ:nsə(r) /

UK / ˈænsɚ /

A1
  • noun
  • Reply to a question someone asks
  • Solution to a problem or test question
  • verb
  • To reply to a question someone asks
  • To solve a test question or a problem

the

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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

big

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US / bɪɡ /

UK / bɪɡ /

A1
  • adjecitve
  • Popular
  • Serious
  • Large

upside

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US / ˈʌpsaɪd /

UK / ˈʌpˌsaɪd /

A2
  • noun
  • Above, over
  • A positive aspect; advantage

this

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US / ðɪs /

UK / ðɪs /

A1
  • adjecitve
  • Used to indicate something already been discussed
  • Used to indicate something happening around now
  • adverb
  • An indication by a physical motion or gesture
  • A specific amount of
  • determiner
  • Person, thing, or idea near you
  • pronoun
  • Person, thing that has already been discussed

may

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US / meɪ /

UK / me /

A1
  • noun
  • 5th month of the year
  • other
  • Used to express a desire
  • Expresses permission, possibility or probability
  • Used to show that a thing could be true

play

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US / pleɪ /

UK / pleɪ /

A1
  • noun
  • Loose, free movement between two objects
  • Single action in a sports game
  • Performance in which people act in a theater
  • verb
  • To act as a character in a movie, or on stage
  • To perform music on an instrument
  • To use a device, e.g. a video game
  • To do something for enjoyment and fun
  • To do or perform a game or sport

comparable

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US / ˈkɒmpərəbl /

UK / ˈkɑmpərəbəl /

A2
  • adjecitve
  • Being similar in some way

perspective

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US / pə'spektɪv /

UK / pɚˈspɛktɪv /

B1
  • noun
  • Artistic method of creating a sense of distance
  • Ability to understand what is important in life

confound

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US / kənˈfaʊnd /

UK / kənˈfaʊnd, kɑn- /

B2
  • verb
  • To confuse or greatly surprise someone

flexible

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US / ˈfleksəbl /

UK / ˈflɛksəbəl /

B1
  • adjecitve
  • Bending easily
  • Able to adjust to new events, requirements easily

depth

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US / depθ /

UK / dɛpθ /

A2
  • noun
  • Distance below a surface

bend

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US / bend /

UK / bɛnd /

A2
  • noun
  • When a road changes direction; turn
  • verb
  • To become curved or no longer straight
  • To move your body so that it is not straight up
  • To turn in a different direction, as a road
  • To use force to make an object not straight

similar

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US / ˈsɪmələ(r) /

UK / ˈsɪməlɚ /

A1
  • adjecitve
  • Nearly the same; alike

tell

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US / tel /

UK / tɛl /

A1
  • verb
  • To (strongly) advise a person to do something
  • To be able to guess
  • To say or communicate information to someone
  • To inform, but without speaking; indicate
  • To have a negative effect on someone
  • To order someone to do something; command
  • To recognize something based on certain signs
  • To report something to an authority
  • To explain something or teach someone something

nothing

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US / 'nʌθɪŋ /

UK / ˈnʌθɪŋ /

A1
  • noun
  • Item of little or no value, importance, interest
  • Number or value of zero
  • pronoun
  • Not anything, not a single thing

what

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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

that

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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’

sit

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US / sɪt /

UK / sɪt /

A1
  • verb
  • To take an exam
  • To be in a resting position on a chair
  • To provide seating for people
  • To remain in a still position while being painted

like

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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

get

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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

must

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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

comment

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US / 'kɒment /

UK / ˈkɑmɛnt /

A2
  • noun
  • Something you say, giving an opinion; remark
  • verb
  • To say something that gives your opinion

down

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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

theory

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US / ˈθiəri /

UK / ˈθiəri, ˈθɪri /

A2
  • noun
  • Ideas or principles that explain facts or events

hold

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US / həʊld /

UK / hold /

A1
  • noun
  • Section of a ship or plane used for storing things
  • Influence or power held over someone
  • Place of support for hands or feet when climbing
  • verb
  • To agree to keep something for someone
  • To have the capacity to support/contain something
  • To control an area and protect it from attack
  • To not allow someone to leave a place
  • To cause an event to happen at a place or time
  • To use hands or arms to carry or keep something
  • To have a specific quality or property
  • To keep an image, belief or feeling in your mind
  • To have or own something
  • To wait before being able to talk on the phone
  • To limit the movement of someone in a sport

change

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US / tʃeɪndʒ /

UK / tʃendʒ /

A1
  • noun
  • Exchange of one set of clothes for another
  • Money in the form of coins instead of paper
  • Money returned after giving too much
  • Act of making or becoming something else
  • verb
  • To exchange one set of clothes for another
  • To exchange one kind of money for another
  • To replace something with another thing
  • To make or become something else
  • To go from one train, bus, etc. and go to another

both

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US / bəuθ /

UK / boθ /

A1
  • determiner
  • Used to refer to two things at the same time
  • pronoun
  • Used to refer to two things at the same time

take

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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

look

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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

moon

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US / mu:n /

UK / mun /

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

move

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US / mu:v /

UK / muv /

A1
  • noun
  • Act of moving a playing piece in chess, etc.
  • An action; doing something
  • Step taken to achieve a goal
  • verb
  • To cause someone to have certain emotions
  • To cause something to change to a different place
  • To change where people live or a business operates
  • To take action to do or achieve something

main

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US / meɪn /

UK / men /

A1
  • adjecitve
  • Most important; most often used

length

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US / leŋθ /

UK / leŋθ /

A2
  • noun
  • Distance from one end of a pool to the other
  • Measurement of distance or of time

clearly

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US / ˈklɪəlɪ /

UK / ˈklɪrlɪ /

A1
  • adverb
  • In a way that is easy to understand; obviously

they

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US / ðeɪ /

UK / ðe /

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

reference

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US / 'refrəns /

UK / ˈrɛfərəns, ˈrɛfrəns /

A2
  • noun
  • A letter of recommendation, e.g. for a job
  • Note in a book, etc. giving source of information
  • A location on a map
  • verb
  • To cite a piece of research in speech or writing

mountain

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US / 'maʊntən /

UK / ˈmaʊntən /

A1
  • noun
  • Very high piece of land, higher than a hill

its

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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”

building

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US / ˈbɪldɪŋ /

UK / ˈbɪldɪŋ /

A1
  • noun
  • A structure with a roof and walls, e.g. a house
  • verb
  • To establish e.g. a reputation, over time
  • To construct a house, office, factory
  • Subtitles section
  • Have you ever gone out on a clear night, looked to the horizon, only to notice a gigantic moon staring back at you?
  • Surely this is the biggest you've ever seen it.
  • Maybe it's just closer to the Earth today?
  • But what if I told you that that moon is the exact same size as every other time you've ever seen it in the sky, and it was in fact playing a trick on your brain?
  • It's called the moon illusion, though an explanation of this optical phenomenon is still debated.
  • What we do know is that when the moon sits closer to the horizon, it seems bigger, but if we measure it in the sky, it's the same size.
  • You can test this by holding your thumbnail at arm's length and comparing it to the size of the moon.
  • Do this when the moon is near the horizon and high in the sky, and you'll notice it doesn't change size.
  • So why does our brain process it so differently?
  • The main theory suggests that when the moon is near the horizon, there are many visual reference points, trees, buildings, mountains, with which its size may be compared.
  • But when the moon resides high in the sky, there's nothing around it to compare, and it seems smaller against the vastness of the night sky.
  • It's similar to an effect known as the Ebbinghaus illusion.
  • Which of these orange circles is larger?
  • It turns out they're the exact same size, but the objects surrounding them have an effect on our brain.
  • The small circles are comparable to the horizon moon with smaller objects in sight, while the large circles are comparable to the high moon surrounded by vast night sky.
  • Furthermore, our brains are used to objects moving towards the horizon becoming smaller, like clouds.
  • So when our brain sees the moon at the horizon appearing the same size in our retina, it compensates for perspective and assumes it must now be physically larger.
  • Still not convinced?
  • Try bending over and looking through your legs at the horizon moon.
  • The effect is gone because upside down trees and buildings don't register as familiar objects and your depth perception isn't confounded.
  • Or for the less flexible, take a photo of both moons.
  • Your camera won't suffer any optical illusions and you can clearly see the moon is the same size.
  • Got a burning question you want answered?
  • Ask it in the comments or on Facebook and Twitter.
  • And subscribe for more weekly science videos.