Waves, Light, Sound Practice Test

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another, caused by a change in its speed.

Front

Which object can refract light?

Back

A glass marble can refract light.

Front

What happens to sound when its amplitude increases?

Back

The sound becomes louder.

Front

What is amplitude in sound waves?

Back

Amplitude is the height of the wave, which determines the loudness of the sound.

Front

What is pitch in sound?

Back

Pitch is how high or low a sound is, determined by the frequency of the sound wave.

Front

How do you change the pitch of a sound?

Back

To change the pitch of a sound, you need to change its frequency.

Front

What is frequency in sound waves?

Back

Frequency is the number of waves that pass a point in one second, measured in Hertz (Hz).

Front

What is the relationship between frequency and pitch?

Back

Higher frequency results in a higher pitch, while lower frequency results in a lower pitch.

Front

What is wavelength in sound waves?

Back

Wavelength is the distance between two consecutive peaks of a wave.

Front

What is the speed of sound?

Back

The speed of sound is how fast sound waves travel through a medium, typically around 343 meters per second in air.