Year 4 Unit 9 Gravitational pull of Earth

What is gravity?

• A force that pushes objects away

• A force that pulls objects toward each other

• A force that makes objects float

• A force that makes objects disappear

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Gravity in Latin is a ....

• rotation

• speed

• weight

• height

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Who discovered gravity?

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In experiment, why do the ball and feather fall on the ground?

• Because the ball is heavy.

• Because of a force known as gravitational pull of earth

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If you were to drop a feather and a ball from the same height, which one would hit the ground first?

• Ball hits the ground first.

• Feather hits the ground first.

• Both hit the ground at the same time.

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Gravity pulls objects towards the Earth.

• True

• False

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What will happen when you throw an object to the sky?

• It will move upwards and floating.

• It will move upwards and fall to the ground.

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Why do astronauts in space experience weightlessness?

• The spaceship's engines cancel out gravity.

• They are in free-fall, just like the spacecraft.

• Astronauts are weightless due to a special suit they wear.

• There is no gravity in space.

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Why the gravitational pull of Earth is important?

(Write your answer based on Science textbook : page 159)