Unit Test — Unit test Answers

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

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

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?

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?

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

A boy yells in a narrow valley. The sound reflects off of a boulder that is 80 m away. How long will it take to hear the echo if the speed of a sound wave is 320 m/s?(speed = )

A longitudinal wave is shown.

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

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.

What best describes white light as it travels through a prism? Check all that apply.

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

Visible light travels at a speed 3.0 × 108 of m/s. If red light has a wavelength of 6.5 × 10–7 m, what the frequency of this light?

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

Ultraviolet light from a distant star is traveling at 3.0 × 108 m/s. How long will it take for the light to reach Earth if it must travel 4.0 × 1013 km?