Physical Science Lessons 5-7 Proof of Mastery Review

Front

What allows a deaf person to perceive sound through a piano?

Back

Sound vibrations travel through the stick and his teeth.

Front

Can energy be created or destroyed?

Back

False, energy cannot be created or destroyed; it can only change forms.

Front

What type of energy results from the random movement of molecules?

Back

Thermal energy.

Front

What happens to an object when it emits sound?

Back

It loses some of its energy to its surroundings.

Front

What type of energy is caused by air particles moving back and forth in waves?

Back

Sound energy.

Front

Define kinetic energy.

Back

Kinetic energy is the energy of an object in motion.

Front

What is the definition of thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter.

Front

What is sound energy?

Back

Sound energy is produced when an object vibrates, causing air particles to move.

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.

Front

What is an example of kinetic energy?

Back

A moving car or a running person.