Waves

Question 1

Frequency

Answer 1

the rate at which a vibration occurs that constitutes a wave, either in a material (as in sound waves), or in an electromagnetic field (as in radio waves and light), usually measured per second.

Question 2

Period

Answer 2

a length or portion of time.

Question 3

Wavelength

Answer 3

the distance between successive crests of a wave, especially points in a sound wave or electromagnetic wave.

Question 4

Crest

Answer 4

The inner section of the wave

Question 5

Trough

Answer 5

A crest is the point on a wave with the maximum value of upward displacement within a cycle.

Question 6

Medium

Answer 6

A substance that makes possible the transfer of energy from one location to another, especially through waves.

Question 7

Amplitude

Answer 7

Amplitude is an important parameter of waves and is the maximum displacement of points on a wave.

Question 8

Longitudinal wave

Answer 8

a wave vibrating in the direction of propagation.

Question 9

Electromagnetic spectrum

Answer 9

the range of wavelengths or frequencies over which electromagnetic radiation extends.

Question 10

Transverse wave

Answer 10

a wave vibrating at right angles to the direction of its propagation.

Question 11

Compression

Answer 11

Mechanical longitudinal waves are also called compressional or compression waves, because they produce compression and rarefaction when traveling through a medium, and pressure waves, because they produce increases and decreases in pressure.