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Question 1

wave

Answer 1

a disturbance caused by a vibration; Waves travel away from the source that makes them.

Question 2

Crest

Answer 2

the highest point of a wave

Question 3

Trough

Answer 3

the lowest point of a wave

Question 4

Amplitude

Answer 4

height or “strength” of a wave

Question 5

Frequency

Answer 5

the number of cycles a wave completes in a period of time; the number of times something happens in a period of time

Question 6

wavelength

Answer 6

the distance between one peak and the next on a wave

Question 7

Period

Answer 7

the amount of time required for two successive wave crests to pass a fixed point in space; the reciprocal of frequency

Question 8

Medium

Answer 8

The medium of a wave is any substance that carries the wave, or through which the wave travels.Ocean waves are carried by water, sound waves are carried by air, and. the seismic waves of an earthquake are carried by rock and soil.

Question 9

Transverse wave

Answer 9

a wave that occurs when the particles of a medium are displaced perpendicularly to the direction of the wave

Question 10

electromagnetic waves

Answer 10

a mode of energy transmission involving oscillating electrical and magnetic fields, that may travel through matter or a vacuum

Question 11

longitudinal waves

Answer 11

a wave that occurs when the particles of a medium move parallel to the direction of the wave

Question 12

compression waves

Answer 12

Compression waves are waves where the vibration is parallel to the direction of motion. The term ‘compression wave’ is usually reserved for use as a mechanical term, while longitudinal wave is much more common for what we’re talking about.

Question 13

rarefaction

Answer 13

a change in the direction and velocity which occurs when a seismic or electromagnetic wave travels from one material into another of different density, state, or elasticity

Question 14

Reflection

Answer 14

a change in the direction of a wave when it hits a barrier and bounces back

Question 15

Refraction

Answer 15

a change in the direction and velocity which occurs when a seismic or electromagnetic wave travels from one material into another of different density, state, or elasticity

Question 16

diffraction

Answer 16

the process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge, typically accompanied by interference between the wave forms produced.