Quattro Reading(Word List)-Master A Unit 26 (E)

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세트공유

astronaut

a person who travels in space
Buzz Aldrin was an astronaut who walked on the moon.

gravity

the force that makes objects with mass fall down towards the ground
Without gravity, we would all be floating in the air.

photon

a particle having energy but no mass or electric charge
Plants use light photons to convert it to energy.

pressure

when gas builds because it is blocked by something
The pressure from the light would push the spaceship forward.

push

to move something forward or away, often by using one's hands
I like to push the cart at the supermarket.

reflect

to turn back, to send back light
The image was reflected in the car's mirror.

sail

a large piece of strong material attached to a ship which used the push of the wind to move
A boat can have one or more sails.

spaceship

a rocket or vehicle that can fly through space
The first American spaceship to land on the moon was called the Eagle, from Apollo 11.