# Mini-Quiz: Speed of Sound in a Gas

by Ron Kurtus (revised 1 June 2008)

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

1. What happens to the speed of sound in air on a humid day?

It increases slightly on a humid day

It decreases considerably on a humid day

Sound cannot travel when the air is extremely humid

2. What happens to the velocity of sound as the temperature increases?

Velocity becomes speed

The velocity increases

The velocity decreases

3. If air molecules are traveling at 500 meters per second, what is the speed of sound?

500 / 0.68 = 735 m/s

0.68 X 500 = 340 m/s

0.68 + 500 = 500.68 m/s

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.

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## Resources and references

Ron Kurtus' Credentials

The following resources provide information on this subject:

### Websites

Speed of Sound - Wikipedia

Sound Speed in Gases - HyperPhysics

Sound Properties and their Perception - High School Physics tutorial

Physics Resources

### Books

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www.school-for-champions.com/science/
mini-quiz_sound_speed_gas.htm

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