Unit Test — Unit test

Question 1

A car’s horn produces a constant frequency of 350 Hz as it passes by Suzy. What is the best estimate of the frequency Suzy hears after the car passes her?

Revolt · Accepted Answer

330 Hz

Question 2

What best describes the motion of the medium particles in a longitudinal wave?

Revolt · Accepted Answer

The medium vibrates parallel to the direction of the wave.

Question 3

The table below shows the speed of sound waves from musical sound sources at 20°C.Which conclusion can be made based on the information in the table?

Revolt · Accepted Answer

Wavelengths and frequency can vary inversely to produce the same wave speed.

Question 4

What is the main difference between a longitudinal wave and a transverse wave?

Revolt · Accepted Answer

A transverse wave is made of particles that move perpendicular to the motion of the wave.

Question 5

A longitudinal wave is shown.

Revolt · Accepted Answer

B

Question 6

The transverse wave shown has a wavelength of 1.5 m and is traveling in the x-direction.

Revolt · Accepted Answer

8.0 seconds

Question 7

Consider the ranges of pitches made by these instruments and vocals.

Revolt · Accepted Answer

violin, clarinet, French horn, tuba

Question 8

Two pulses are moving along a string. One pulse is moving to the right and the second is moving to the left. Both pulses reach point X at the same instant.

Revolt · Accepted Answer

Yes, the overlap will occur during the slope of the waves.

Question 9

_______interference occurs when two waves overlap and the resulting wave has a larger amplitude.

Revolt · Accepted Answer

Constructive

Question 10

Which animals can hear a sound wave that has 18,500 cycles in 0.75 seconds? Check all that apply.

Revolt · Accepted Answer

bats; moths; cats

Unit Test — Unit test Answers

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