Lesson Check: Sound and Light

Front

What is the substance through which waves travel?

Back

Medium

Front

True or False: Light travels as tiny particles of energy.

Back

True

Front

Why can't astronauts in space talk to each other without a radio?

Back

There is no air in space, so there is no medium to carry sound waves.

Front

Fill in the blank: Sound ____ travel through outer space.

Back

does not

Front

What form of energy allows you to see objects?

Back

Light

Front

What is sound?

Back

Sound is a type of energy made by vibrations that travels through a medium.

Front

What is light?

Back

Light is a form of energy that travels in waves and allows us to see.

Front

What is a medium?

Back

A medium is a substance (like air, water, or solid materials) through which waves can travel.

Front

Can sound travel through water?

Back

Yes, sound can travel through water because water is a medium.

Front

What happens to sound in a vacuum?

Back

Sound cannot travel in a vacuum because there is no medium.