Understanding Energy Transformations and Vocabulary

Front

Which of the following shows an energy transformation from chemical energy to electrical energy to light energy? A. A bolt of lightning illuminates the night sky, B. A candle glows brightly in the dark, C. A fire in a fireplace lights up a room, D. A battery causes a flashlight to shine

Back

A battery causes a flashlight to shine.

Front

How is energy transferred in transverse and longitudinal waves?

Back

In transverse waves, energy is transferred through the perpendicular movement of the medium to the direction of the wave. In longitudinal waves, energy is transferred through parallel movement of medium particles along the direction of the wave.

Front

Which energy transformations occur when a student eats food and then uses that energy to run a race?

Back

Chemical → mechanical → thermal

Front

A student stretches a rubber band and then releases it. How do the potential energy and kinetic energy change during this process?

Back

The potential energy decreases as the rubber band is stretched, and the kinetic energy increases when the rubber band is released.

Front

When a roller coaster reaches the top of a hill and starts to descend, what happens to its potential energy and kinetic energy?

Back

Potential energy decreases while kinetic energy increases.

Front

Which statement accurately compares gravitational, elastic, and chemical potential energies? Options: A. Gravitational potential energy and chemical potential energy are similar because both depend on an object's movement, while elastic potential energy is unrelated. B. Gravitational and elastic potential energies involve the position or shape of objects, but chemical potential energy involves temperature changes. C. Elastic potential energy is only related to the height of an object, while gravitational and chemical potential energies are similar in that they both involve stored energy in bonds. D. Gravitational potential energy depends on an object's height, elastic potential energy depends on its shape, and chemical potential energy depends on stored chemical bonds.

Back

Gravitational potential energy depends on an object's height, elastic potential energy depends on its shape, and chemical potential energy depends on stored chemical bonds.

Front

What energy transformation takes place as a rock rolls down a hill?

Back

Potential Energy to Kinetic Energy

Front

Food chains and food webs are examples of energy transformations.

Back

True