Copy of 8th Grade MidTerm Review

Front

What happens to kinetic energy as a skier increases speed while skiing downhill?

Back

Kinetic energy increases.

Front

What happens to potential energy as a skier descends a mountain?

Back

Potential energy decreases.

Front

What does a horizontal line on a distance-time graph indicate about an object's motion?

Back

The object is at rest.

Front

If a student pushes against a wall with 20N of force, what force does the wall exert back?

Back

The wall exerts 20N of force.

Front

What is the primary reason Earth experiences different seasons?

Back

The tilt of Earth's axis as it revolves around the Sun.

Front

When a roller coaster is at the top of a hill, what type of energy does it have?

Back

Only potential energy.

Front

Define kinetic energy.

Back

The energy an object possesses due to its motion.

Front

Define potential energy.

Back

The energy stored in an object due to its position or state.

Front

What is the relationship between potential and kinetic energy in a roller coaster?

Back

As potential energy decreases, kinetic energy increases and vice versa.

Front

What does it mean if an object is accelerating?

Back

Its speed or direction is changing over time.