Electromagnetic Spectrum Vocabulary

Question 1

Moving energy without matter

Answer 1

Wave

Question 2

The top of a wave

Answer 2

Crest

Question 3

The bottom of the wave

Answer 3

Trough

Question 4

The distance from the top to the middle of the wave

Answer 4

Amplitude

Question 5

The distance from top to top and bottom to bottom

Answer 5

Wave length

Question 6

The amount of times a wave crosses a point in a given amount of time

Answer 6

Frequency

Question 7

Time for a complete cycle to pass a given point

Answer 7

Period

Question 8

Matter through which a mechanical wave travels

Answer 8

Medium

Question 9

A wave in which the energy travels perpendicular to the direction of the disturbance

Answer 9

Transverse wave

Question 10

A wave that does not need a medium

Answer 10

Electromagnetic Wave

Question 11

A wave that travels in the same direction as the disturbance

Answer 11

Longitudinal wave

Question 12

When a longitudinal wave pushed matter closer together

Answer 12

Compression

Question 13

When a longitudinal waves matter is spaced farther apart

Answer 13

Rarefraction

Question 14

When a wave strikes a surface and bounces back in another direction

Answer 14

R​eflection

Question 15

The bending of waves as they pass through a material

Answer 15

Refraction

Question 16

Waves spread out as a result of passing through a narrow aperture or around an edge of material

Answer 16

Diffraction