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Mini-Quiz: Sound Seems Amplified Over Water

by Ron Kurtus (22 December 2006)

Take this Mini-Quiz to check your understanding of the lesson material.



1. Why does the amplitude of sound decrease with distance?

It actually gets louder, except you are further away

The sound waves spread out, thus reducing their amplitude

The sound waves become cold when near water

2. What is refraction?

When sound or light bounces off a shiny surface

When a wave loses its amplitude due to bending

When a wave bends because it is entering a different material at an angle

3. When doesn't the sound seem amplified over water?

In the winter, if the air is colder than the water

When you are swimming

At noon, when the Sun is directly above

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.


Know the principles of science


Resources and references

Ron Kurtus' Credentials

The following resources provide information on this subject:

Websites

Speed of Sound - Hyperphysics site

Physics Resources

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Top-rated books on Sound Waves


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