Front

What do you need to find the speed of an object?

Back

You need to know the distance an object moves and the time it takes to move that distance.

Front

What happens to water vapor when it changes to liquid water?

Back

It releases energy (heat).

Front

How does friction affect the movement of a soccer ball on a grassy field?

Back

Friction will decrease the speed of the ball.

Front

What causes two objects to hit the ground at the same time when dropped?

Back

Gravity causes both objects to hit the ground at the same time, regardless of their mass.

Front

What happens to water when it boils?

Back

Some of the water changes to water vapor.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object.

Front

What is the definition of mass?

Back

Mass is the amount of matter in an object, usually measured in grams or kilograms.

Front

What is the relationship between mass and gravity?

Back

The more mass an object has, the stronger the gravitational pull it experiences.

Front

What is energy?

Back

Energy is the ability to do work or cause change.

Front

What is the definition of motion?

Back

Motion is the change in position of an object over time.