What Is Gravity Anyway? — Questions and answers

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What did Lucia ask her dad about things falling?

Choices

  1. Why do things always fall down? ✓
  2. Why do things always fall sideways?
  3. Why do things always fall up?
  4. Why do things always fly away?

Answer: Why do things always fall down?

From page 1

What is the 'invisible pull' Lucia's father talked about?

Choices

  1. Gravity ✓
  2. Wind
  3. Magic
  4. Push

Answer: Gravity

From page 2

When and where did people not know what force held the Moon in the sky?

Choices

  1. A quiet English farm in 1666 ✓
  2. A busy city in 2023
  3. A spaceship in the future
  4. An ancient Egyptian pyramid

Answer: A quiet English farm in 1666

From page 3

Why did Isaac Newton return to the farm from his university?

Choices

  1. To escape a terrible plague ✓
  2. To plant a garden
  3. To visit his family
  4. To study apples

Answer: To escape a terrible plague

From page 4

What brilliant question did Newton ask about the apple and the Moon?

Choices

  1. Could gravity reach the Moon? ✓
  2. Why do apples fall?
  3. Is the Moon made of apples?
  4. How fast does an apple fall?

Answer: Could gravity reach the Moon?

From page 5

What did Newton realize would happen if a cannonball was fired with enough speed from a mountain?

Choices

  1. It would fall all the way around the Earth, becoming a satellite. ✓
  2. It would fly up into space forever.
  3. It would land very close by.
  4. It would disappear into thin air.

Answer: It would fall all the way around the Earth, becoming a satellite.

From page 6

What did Newton's Law of Universal Gravitation help us do?

Choices

  1. Predict how planets move and guide spaceships ✓
  2. Cook delicious meals
  3. Build tall buildings
  4. Learn how to fly kites

Answer: Predict how planets move and guide spaceships

From page 7

What did Lucia realize about astronauts and Newton's cannonball?

Choices

  1. Astronauts are like Newton's cannonball, constantly falling but circling the Earth. ✓
  2. Astronauts are trying to catch Newton's cannonball.
  3. Astronauts are building a new cannonball.
  4. Astronauts are afraid of falling.

Answer: Astronauts are like Newton's cannonball, constantly falling but circling the Earth.

From page 8

Who did Lucia remember had a different idea about gravity?

Choices

  1. Albert Einstein ✓
  2. Isaac Newton
  3. Her dad
  4. A basketball player

Answer: Albert Einstein

From page 9

What new idea about gravity did Lucia think about, based on Einstein?

Choices

  1. Gravity is a bend in the shape of space itself. ✓
  2. Gravity is an invisible string pulling things down.
  3. Gravity is a type of cosmic glue that only works on Earth.
  4. Gravity is only for very heavy things.

Answer: Gravity is a bend in the shape of space itself.

From page 10