Light and Sound

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, such as from air into water.

Front

What happens to light when it hits a reflective surface?

Back

When light hits a reflective surface, it bounces back. This is called reflection.

Front

What is the difference between transparent, translucent, and opaque materials?

Back

Transparent materials allow light to pass through clearly (e.g., glass), translucent materials allow some light to pass but not clearly (e.g., frosted glass), and opaque materials do not allow light to pass through at all (e.g., wood).

Front

What causes sound?

Back

Sound is caused by vibrations. When an object vibrates, it creates sound waves that travel through the air.

Front

How does the length of a guitar string affect the sound it makes?

Back

Longer strings produce lower pitches, while shorter strings produce higher pitches.

Front

What is pitch?

Back

Pitch is how high or low a sound is. It is determined by the frequency of the sound waves.

Front

What is volume?

Back

Volume is the loudness or softness of a sound. It is determined by the amplitude of the sound waves.

Front

What happens to sound as it travels further away from the source?

Back

As sound travels further away from the source, it becomes softer and less distinct.

Front

What is an example of a transparent material?

Back

An example of a transparent material is clear glass.

Front

What is an example of a sound being produced by vibration?

Back

A guitar makes sound when its strings vibrate.