Unit 6 Final Exam Review

Front

What is compression in a wave?

Back

Compression is the region in a longitudinal wave where the particles are closest together.

Front

What is rarefaction in a wave?

Back

Rarefaction is the region in a longitudinal wave where the particles are furthest apart.

Front

Define wavelength.

Back

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

Front

What is frequency in the context of waves?

Back

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

Front

What is constructive interference?

Back

Constructive interference occurs when two waves meet and combine to form a wave with a larger amplitude.

Front

What is destructive interference?

Back

Destructive interference occurs when two waves meet and combine to form a wave with a smaller amplitude or cancel each other out.

Front

Why does lightning appear before thunder?

Back

Lightning is visible before thunder because light travels faster than sound.

Front

What happens to the frequency of sound waves as a source approaches an observer?

Back

As a source approaches, the frequency of the sound waves increases due to the Doppler effect.

Front

What happens to the wavelength of sound waves as a source approaches an observer?

Back

As a source approaches, the wavelength of the sound waves decreases due to the Doppler effect.

Front

What is a transverse wave?

Back

A transverse wave is a wave in which the particles of the medium move perpendicular to the direction of the wave's travel.