Unit 8.2 Quiz 2

What do musicians need to do differently when they interact with sound sources to get them to produce softer sounds?

• Use more force on the sound source.

• Use less force on the sound source.

• Move the sound source closer.

• Move the sound source farther away.

Answer explanation

To produce softer sounds, musicians need to use less force on the sound source. Applying less force reduces the intensity of the sound produced, leading to a softer output.

Which type of sound causes larger vibrations?

• low pitch, low volume

• low pitch, high volume

• high pitch, low volume

• high pitch, high volume

Answer explanation

Low pitch sounds have longer wavelengths, which can cause larger vibrations. When combined with high volume, the energy increases, resulting in even larger vibrations compared to other options.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Larger vibrations cause:

• no change in sounds

• softer sounds

• louder sounds

Answer explanation

Larger vibrations produce more energy, which results in louder sounds. Therefore, the correct answer is 'louder sounds' as increased vibration intensity directly correlates with sound volume.

Tags

NGSS.MS-PS4-1

Terrence was practicing on his drums one afternoon when his mom asked him to play quieter. What  should Terrence do?

• Tap the drums harder

• Tap the drums softer

• Tighten the drums

• Get a bigger drumstick

Answer explanation

Terrence should tap the drums softer because his mom asked him to play quieter. This choice directly addresses her request, while the other options would not help reduce the noise.

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The arrow is indicating which part of the wave?

• amplitude

• crest

• trough

• wavelength

Answer explanation

The arrow indicates the amplitude, which is the maximum height of the wave from its rest position. It measures the wave's energy, while the crest and trough refer to the highest and lowest points, respectively.

Tags

NGSS.MS-PS4-1

The arrow is indicating which part of the wave?

• amplitude

• crest

• trough

• wavelength

Answer explanation

The arrow points to the highest point of the wave, which is called the crest. The crest is the peak of the wave, while the trough is the lowest point, and amplitude refers to the height from the rest position.

Tags

NGSS.MS-PS4-1

The arrow is indicating which part of the wave?

• amplitude

• crest

• trough

• wavelength

Answer explanation

The arrow indicates the distance between two consecutive points of the wave, which is the wavelength. It measures the length of one complete wave cycle.

Tags

NGSS.MS-PS4-1

The arrow is indicating which part of the wave?

• amplitude

• crest

• trough

• wavelength

Answer explanation

The arrow points to the lowest point of the wave, which is called the trough. The trough is the opposite of the crest, which is the highest point of the wave.

Tags

NGSS.MS-PS4-1