Definitions
Mechanical Waves
Properties of Waves
Sound
General Module 9
100

The lowest point on the wave.

What is a trough?

100

A way in which the medium vibrates at right angles to the direction the wave travels.

What is a transverse wave?


100

The maximum displacement of the medium from it's rest.

What is amplitude?

100

Energy that moves in waves through matter from a vibrating object.

What is sound energy?

100

These type of waves travel faster than sound.

What is light?

200

The thunderlike sound produced as a result of the object traveling at or above Mach 1.

What is sonic boom?

200

A disturbance in matter that transfers energy through the matter.

What is a mechanical wave?


200

The distance between a point on one cycle of the wave and the same point on the next cycle.

What is a wavelength?

200

The type of waves that sound travels by.

What are longitudinal waves?

200

Sound energy causes air to move in this way.

What is oscillate or vibrate back and forth?

300

An indication of how high or low a sound is, which is primarily determined by the frequency of the sound wave.

What is pitch?

300

The type of wavelengths that have greater frequencies?

What are shorter wavelengths?

300

The equation for wave speed>

What is  speed = wavelength x frequency?


300

Sound intensity depends on this part of the wave.

What is the waves amplitude?

300

The more of this a wave has, the greater it is amplified.

What is energy?

400

A change in sound frequency caused by the motion of the sound source, motion of the listener; or both

What is the doppler effect?

400

The matter through which a wave travels.

What is the medium of a wave?

400

The number of complete cycles in a given time.

What is the frequency of a wave?

400

The equation for the speed of sound in air.

What is v = (331.5 + 0.6 x T) m/s?

400

The wavelength and the frequency are related in this way to one another.

What are inversely proportional?

500

A unit of measurement for frequency.

What is a Hertz?

500

Source, crests, trough and amplitude are all parts of this.

What are the parts of a transverse wave?

500

This and wavelength are related to one another through the speed of the wave.

What is frequency?

500

The four properties that describe waves.

What are speed, wavelenth, frequecy and amplitude?

500

Another name for a reflective wave.

What is an echo?