SOL Science 5.2 Sound

Front

What is an instrument that produces a vibration when its surface is struck?

Back

Percussion instrument.

Front

What is a back and forth motion or movement of an object called?

Back

Vibration.

Front

What do we call sound waves with frequencies below 20 Hz?

Back

Infrasound.

Front

What is the term for the number of complete wavelengths that pass a point in a given time?

Back

Frequency.

Front

What is a space where no particles of matter exist?

Back

Vacuum.

Front

What is the term for the distance between two consecutive peaks of a wave?

Back

Wavelength.

Front

What is the unit of measurement for frequency?

Back

Hertz (Hz).

Front

What is the term for the highest point of a wave?

Back

Crest.

Front

What is the term for the lowest point of a wave?

Back

Trough.

Front

What is the phenomenon called when sound waves bounce off a surface?

Back

Reflection.