Forces in Action

What force pulls objects toward the center of the Earth?

• Magnetism

• Gravity

• Friction

• Push

What is friction?

• A force that speeds things up

• A force that pulls things down

• A force that occurs when two surfaces rub against each other

• A force that pushes things away

When you push a toy car forward, what type of force are you applying?

• Gravity

• Friction

• Push

• Pull

Which of the following is an example of a pull force?

• Kicking a ball

• Opening a door

• Sitting on a chair

• Dropping a pencil

What happens to the motion of an object when the force of friction is increased?

• It moves faster

• It does not change

• It moves slower

• It changes direction

What can you do to reduce friction between two surfaces?

• Press them harder together

• Add a lubricant like oil

• Make the surfaces rougher

• Increase the weight of the object

Which of the following is NOT a result of gravity?

• Apples falling from a tree

• A ball rolling down a hill

• A leaf floating on water

• The moon orbiting the Earth

If you slide a book across a table and let go, why does it stop moving after a while?

• Because of gravity

• Because of a push force

• Because of friction

• Because it runs out of energy

What would happen if there was no gravity on Earth?

• We would float into space

• We would move faster

• We would be stronger

• We would be heavier

When you rub your hands together quickly, they become warm due to:

• Gravity

• Push force

• Friction

• Pull force