Unit Test — Unit test

Question 1

The figure shows a sound wave as a function of time when the source is stationary with respect to the observer.

Revolt · Accepted Answer

An Illustration of a transverse wave and seven crests and seven troughs are labeled 1 s total.

Question 2

An illustration of a ringing bell and dots representing air molecules. The dots are close together, then far apart and close together again representing a longitudinal mechanical wave of sound going from the bell to an ear.

Revolt · Accepted Answer

four

Question 3

Study the diagram.

Revolt · Accepted Answer

A: crestB: amplitude C: trough D: wavelength

Question 4

SONAR stands for "sound navigation and ranging,” and it is used to map and explore the ocean floor.

Revolt · Accepted Answer

longitudinal and mechanical

Question 5

What is the purpose of a rearview mirror in a car?

Revolt · Accepted Answer

The mirror allows the light to be reflected so the objects behind the car can be seen.

Unit Test — Unit test Answers

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