Sound & Light Review

Front

What is the relationship between frequency and pitch of a sound?

Back

Frequency and pitch are directly related; as frequency increases, pitch increases.

Front

What does a wave do?

Back

A wave transfers energy through vibrations.

Front

How do you calculate the speed of a wave?

Back

Speed = Frequency x Wavelength.

Front

What is the speed of a dolphin call with a frequency of 150 Hz and a wavelength of 10 m?

Back

1,500 m/s.

Front

What is digital technology used for in information transmission?

Back

Digital technology uses less data to create an accurate representation of information.

Front

What is the area of low pressure in a longitudinal wave called?

Back

Rarefaction.

Front

What is the area of high pressure in a longitudinal wave called?

Back

Compression.

Front

Define wavelength in the context of waves.

Back

Wavelength is the distance between two consecutive points in phase on a wave, such as crest to crest.

Front

What is the difference between analog and digital signals?

Back

Analog signals are continuous, while digital signals are discrete and represent data in binary.

Front

What is the speed of sound in air at room temperature?

Back

Approximately 343 m/s.