Sound (Review/Study Guide)

What happens to energy in the inner ear? Kinetic energy converts to ________ energy and signal is sent to the brain via the auditory nerve.

• electrical

• thermal

• chemical

• light

What do you know about Sound Waves? The hairs of different length vibrate with different frequencies. Long hairs react to ___ frequencies, and short hairs react to ___ frequencies.

• low, high

• high, low

• medium, low

• low, medium

Tags

NGSS.HS-PS4-1

What do you know about Sound Waves? Rank from fastest to slowest for speed of sound in the following materials. (note how close together particles are) (Slowest) ___ , ___ , ___ (Fastest)

• C, A, B

• A, B, C

• B, C, A

• A, C, B

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

The wavelength and frequency of each wave below are:

• Wavelength is the distance between two consecutive crests; frequency is the number of waves passing a point per second.

• Wavelength is the height of the wave; frequency is the speed of the wave.

• Wavelength is the time between two waves; frequency is the distance between two troughs.

• Wavelength is the amplitude of the wave; frequency is the length of the wave.

Tags

NGSS.MS-PS4-1

Softest Sound = ________ (darker or lighter)

• lighter

• darker

• loud

• sharp

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NGSS.MS-PS4-2

Rank the following from Lowest frequency to highest frequency: A (light blue), B (green), C (red), D (orange), E (pink), F (purple). Write the order from lowest to highest frequency.

• C, E, A, B, D, F

• A, B, C, D, E, F

• F, D, B, A, E, C

• B, A, D, F, C, E

Tags

NGSS.MS-PS4-1

When you see lightning, start counting seconds. If it takes 20 seconds to hear thunder, then the strike was ___ miles away.

• 4

• 2

• 10

• 8

If the period is 2.5 seconds, what is the frequency?

• 0.4 Hz

• 2.5 Hz

• 4 Hz

• 0.25 Hz

Tags

NGSS.HS-PS4-1

If the Speed of the wave is 17 m/s and the frequency is 10 Hz, what is the wavelength?

• 1.7 m

• 0.59 m

• 27 m

• 170 m

Tags

NGSS.MS-PS4-1

Why is the morning quiet, and why can you hear farther at night?

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Tags

NGSS.MS-PS4-1