Gravity

What is gravity?

• a. A force that pushes objects away from each other

• b. A force that pulls objects toward each other

• c. A force that causes objects to spin

• d. A force that causes objects to change shape

What is the difference between weight and mass?

• a. Mass is the amount of matter in an object, while weight is the force of gravity on an object.

• b. Mass is the force of gravity on an object, while weight is the amount of matter in an object.

• c. Mass and weight are the same thing.

• d. Mass and weight are both types of forces.

Which of the following best describes the relationship between distance and gravity?

• a. The closer two objects are, the stronger the gravitational force between them.

• b. The farther two objects are, the stronger the gravitational force between them.

• c. The distance between two objects does not affect the gravitational force between them.

• d. The gravitational force between two objects is random and unpredictable.

Why do astronauts experience weightlessness in space?

• a. Because there is no gravity in space.

• b. Because the gravitational force in space is weaker than on Earth.

• c. Because the spacecraft they are in is moving too fast.

• d. Because they are too far away from Earth.

Which of the following objects would have the strongest gravitational force?

• a. A pencil

• b. A basketball

• c. A car

• d. The Earth

Why do objects fall to the ground when dropped?

• Because they are pushed by the air.

• Because they are pulled by the ground.

• Because they are pulled by gravity.

• Because they are attracted to the person who dropped them.

Which scientist is credited with discovering gravity?

• Albert Einstein

• Isaac Newton

• Galileo Galilei

• Johannes Kepler

Which of the following objects would have the greatest acceleration due to gravity?

• A feather

• A rock

• A ping-pong ball

• A paper clip