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General Questions

One of the statements (not questions) from this document is incorrect. Which one?

One of the statements is essentially physically different from all the others. Which one?

Sound

Organized molecular oscillation in a medium. Sound energy moves mocecules (vibrates them) back and forth. Animals can sense this motion using their ears, which transmit the sound into mechanical motion and eventually into electric impluses which travel along nerves into the brain. This motion is too minute to be sensed by the skin or other nerves in most animals.

Echo

An echo happens when sound encounters an object, and rather than being absorbed, bounces off and goes in another direction.

Echo Question

Why can't you hear echoes inside your own home, if the sound bounces off the walls?

Frequency

The speed at which sound makes the medium through which it is passing vibrate. Frequency of vibration is independent of the speed of the sound.

Ultrasonic

A subjective term which means a sound too high pitched to hear by (usually) humans.

UniStatsian, UniStatsian Male

A person living in the United States. Formerly known, in more isolated and parochial times, as "American.".

Volume

The loundness of a sound. Actually, a measure of the amount of energy transmitted by a sound. The more energy, the more molecular motion, the more motion, the more an ear perceives noise.

Volume Riddle

What happens if a very loud ultrasonic noise is made?

Hertz

Hertz Question

Ringing Ears

We hear loud sounds, mostly noise, long after they have stopped.

Amplitude

The hieght of a wave. If example, you were sitting on the ocean, and the rise and fall of the boat you were in - hopefully you're in a boat or you can swim (!) is three feet, that hieght is the amplitude. Sound waves have amplitudes measured in thousandths of inches.

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