2nd 9 Weeks Review

Front

The law of ________________ states that energy in a system can change forms but can never be created or destroyed.

Back

conservation of energy

Front

Refraction occurs when a wave changes its _______ as it passes through a different medium.

Back

speed

Front

Which of the following objects would NOT be a good insulator of electric charge?

Back

skin

Front

Electric charge flows from ____________ voltage to __________ voltage.

Back

high voltage to low voltage

Front

Houses with carpet are much quieter than houses with tile or hardwood floors because of sound wave _______.

Back

absorption

Front

What is the definition of 'conservation of energy'?

Back

The principle that energy cannot be created or destroyed, only transformed from one form to another.

Front

What happens to the speed of light when it enters a denser medium?

Back

The speed of light decreases.

Front

What is an insulator?

Back

A material that does not allow electric charge to flow easily.

Front

What is the relationship between voltage and electric charge flow?

Back

Electric charge flows from areas of high voltage to areas of low voltage.

Front

What is sound wave absorption?

Back

The process by which sound energy is taken in by a material, reducing the sound's intensity.