12/7/17 Waves

Question 1

Transfers energy through a medium. They are reflected from surfaces and diffracted round objects

Answer 1

Wave

Question 2

Highest point in a wave.

Answer 2

Crest

Question 3

The lowest point of a wave.

Answer 3

Trough

Question 4

The distance from crest to crest or trough to trough.

Answer 4

Wave Length

Question 5

the number of cycles a wave completes in a period of time; the number of times something happens in a period of time; the number of waves produced each second; the unit is hertz

Answer 5

Frequency

Question 6

a length of time (related word: periodic)

Answer 6

Period

Question 7

the distance between one peak and the next on a wave

Answer 7

Wavelengh

Question 8

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

Answer 8

Longitudinal wave

Question 9

height or “strength” of a wave; the height of the wave from the mid-point to the crest

Answer 9

Amplitude

Question 10

An substance, as air, through a force acts or a effect is produced

Answer 10

Medium

Question 11

a metal object that acts as a magnet when an electric current moves through it

Answer 11

Electromagnetic

Question 12

a range of electromagnetic frequencies; e.g. the light spectrum is the range of frequencies of visible light (related term: electromagnetic spectrum)

Answer 12

Spectrum

Question 13

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

Answer 13

Transverse wave

Question 14

occurs when rocks are squeezed by external forces directed toward one another to put stress on the rock

Answer 14

Compression

Question 15

to strike a surface and bounce back in the opposite direction

Answer 15

Reflection

Question 16

The bending of light as it moves through or around an object; the change of a wave when it passes into or out of a different medium

Answer 16

Refraction

Question 17

A reduction in density in a longitudinal wave

Answer 17

Rarefraction

Question 18

to bend light as it passes through a material

Answer 18

Refraction

Question 19

Vibrates at right angles and vibrates from side to side

Answer 19

Transverse wave

Question 20

Push and pull motion creates compression and expansion. A wave that vibrates in the same direction as the wave travels

Answer 20

Compression

Question 21

Greek stumble meaning wave length

Answer 21

Lambda

Question 22

Speed (mps) = frequency (hertz) x wavelength (meters)

Answer 22

V = f x Lambda

Question 23

the change in direction of a wave when it passes close to the edge of an opaque body

Answer 23

Diffraction

Question 24

Waves can also be absorbed when they pass into a different..?

Answer 24

Medium

Question 25

They exist over a great range of wavelength called the..

Answer 25

ELECTROMAGNETIC SPECTRUM

Question 26

…? Are caused by vibrations in particles of matter. They are transmitted through matter and cannot travel through a vacuum

Answer 26

Sound waves

Question 27

When the sound spins high pitched is it moving up or down?

Answer 27

Up

Question 28

Bigger the amplitude…

Answer 28

Bigger the sound

Question 29

Light is a…?

Answer 29

Light

Question 30

Compression and Rare fraction are parts of…

Answer 30

Parts of a compressional wave

Question 31

What waves travels the same way as the disturbance?

Answer 31

Compressional

Question 32

How to find F?

Answer 32

V/Lambda

Question 33

How to find Lambda?

Answer 33

V/F