Sounds and Lights Flashcard for First Grade

Front

What must happen for you to hear sound?

Back

The sound must be loud enough and you must be within hearing range.

Front

What is the main color of the Sun's light?

Back

White.

Front

Why can't you hear sounds in space?

Back

Because space is a vacuum and has no air for sound to travel through.

Front

What is the effect of sound waves hitting your eardrum?

Back

You hear sounds.

Front

What makes sound?

Back

Vibration.

Front

What do we call the movement of sound through the air?

Back

Sound waves.

Front

What is a vacuum?

Back

A space that has no air.

Front

What do we need to hear sound?

Back

We need air and a sound source.

Front

What is light?

Back

Light is a form of energy that helps us see.

Front

What color is the light from a candle?

Back

Yellow or orange.