B 8/9 Waves & Their Interactions with Matter

What is the term used to describe the high point of a wave?

• crest

• trough

• amplitude

• wavelength

Answer explanation

The high point of a wave is called a CREST.

What is the term used to describe the low point of a wave?

• crest

• trough

• Amplitude

• wavelength

Answer explanation

The low point of a wave is called a trough.

What is the term used to describe the the distance between two crests or two troughs of a wave?

• amplitude

• crest

• trough

• wavelength

Answer explanation

Wavelength is the distance between two crests or two troughs.

What is the term used to describe the height of a wave to the crest or the depth of a wave to the trough?

• amplitude

• crest

• trough

• wavelength

Answer explanation

Amplitude is the height of a wave to its crest or the depth of a wave to its trough.

What term describes the number of wavelengths that pass through a given space in a certain amount of time?

• wavelength

• frequency

• amplitude

• wave speed

Answer explanation

Frequency refers to the number of waves that pass through a given space in a certain amount of time.

Which letter represents the wavelength of the wave?

• A

• B

• C

• D

Answer explanation

Wavelength is the distance between two crests or two troughs. B shows wavelength.

Which letter represents the crest of the wave?

• A

• B

• C

• D

Answer explanation

A crest is the high point of a wave. A shows a crest.

Which letter represents the trough of the wave?

• A

• B

• C

• D

Answer explanation

A trough is the low point of a wave. D shows a trough.

Which letter represents the amplitude of the wave?

• A

• B

• C

• D

Answer explanation

Amplitude is the height of a wave to a crest or the depth of a wave to a trough. C shows amplitude.

What color of visible light has the highest energy?

• red

• orange

• green

• blue

• violet