Fall Semester Test Study Guide

Front

What is the energy transformation that takes place in a hand warmer?

Back

Chemical potential energy is transformed into thermal energy.

Front

At what height does a dropped can have the least gravitational potential energy?

Back

25 cm.

Front

How do you determine the temperature of a substance?

Back

By averaging the speed of its molecules.

Front

Where is the most kinetic energy found on a roller coaster?

Back

At the bottom of the tallest hill.

Front

What is the main cause of objects changing, moving, or doing work?

Back

Energy.

Front

Define gravitational potential energy.

Back

The energy an object possesses due to its position in a gravitational field.

Front

What is kinetic energy?

Back

The energy an object has due to its motion.

Front

Explain the relationship between potential energy and kinetic energy in a roller coaster.

Back

As potential energy decreases (going down a hill), kinetic energy increases.

Front

What is thermal energy?

Back

The total energy of all the particles in a substance, related to temperature.

Front

What is the formula for calculating gravitational potential energy?

Back

PE = mgh (mass x gravity x height).