Waves

Question 1

What is displacement of the medium?

Answer 1

Material a wave is travelling through. I.e. Up to down

Question 2

What is a transverse wave?

Answer 2

A wave in which particulars in the medium vibrate PERPENDICULAR to the propagation

Question 3

What is a longitudinal wave?

Answer 3

A wave in which the particles vibrate PARALLEL to the propagation

Question 4

Point P is on the front end of a wave. Which direction is point P moving?

Answer 4

Up

Question 5

What is propagation?

Answer 5

Direction of energy travel in a wave

Question 6

What does the speed of a wave determined by?

Answer 6

The medium it travels through

Question 7

What does higher frequency mean?

Answer 7

Shorter wave lengths because the speed is constant

Question 8

If you change the medium, what does this change and not change?

Answer 8

Speed and wavelength -change

Frequency-don’t change

Question 9

How do you work out the speed of a wave?

Answer 9

V = D/T

Question 10

How do you work out the wavelength?

Answer 10

V=F X (wave length symbol)

Question 11

What is amplitude?

Answer 11

Distance from the midpoint of the wave to the top

Question 12

Properties of transverse waves?

Answer 12

Peaks + troughs

Vibrations perpendicular to propagation

Same speed through vacuum and space

E.g light waves

Question 13

Properties of longitudinal waves?

Answer 13

Compressions and rarefactions

Particles vibrate parallel to the propagation

Usually through a medium

E.g sound

Question 14

What is reflection?

Answer 14

The change in direction of a wave when it bounces off a surface

Question 15

What is diffraction?

Answer 15

When a wave curves around a surface

Question 16

What is refraction?

Answer 16

The change in direction of a wave when it passes into or out of a different medium

Question 17

Is sound transverse or longitudinal?

Answer 17

Longitudinal

Question 18

Is the speed of sound constant?

Answer 18

Hell yeah

Question 19

What happens if the period stays the same?

Answer 19

The wave will have the same frequency

Question 20

What is a period?

Answer 20

The time it takes from one crest to the next

Question 21

What do waves transfer?

Answer 21

Energy

Question 22

What don’t waves transfer?

Answer 22

Matter

Question 23

Are electromagnetic waves transverse or longitudinal?

Answer 23

Transverse

Question 24

Are mechanical waves transverse or longitudinal?

Answer 24

both

Question 25

What is maximum curving?

Answer 25

When the gap is the same as the wavelength

Question 26

How can you describe a wave?

Answer 26

By wavelength Speed Amplitude Frequency

Question 27

What do waves transfer?

Answer 27

Energy not matter

Question 28

What is amplitude?

Answer 28

Maximum distance from undisturbed position

Question 29

What is wavelength ?

Answer 29

Distance from crest to crest

Question 30

What is frequency

Answer 30

Number of waves produced each second

Question 31

What are seismic waves

Answer 31

Waves that must travel through a medium Longitudinal

Question 32

What do electromagnetic waves travel through?

Answer 32

Can travel through a medium Also Magnetic and electrical fields And empty space. (Transverse)

Question 33

What are the laws of reflection?

Answer 33

Angle of incidence = angle of reflection Normal line is drawn at right angles to reflector Angle of incidence is between incoming ray and normal Angle of reflection is between refracted ray and normal

Question 34

What is maximum diffraction?

Answer 34

Gap is the same as the wavelength

Question 35

What does diffraction depend on?

Answer 35

Width of the gap

Question 36

Gap similar to the wavelength means?

Answer 36

Lots of spreading and no sharp shadow

Question 37

Gap not similar to the wavelength means?

Answer 37

Not a lot of spreading, sharp shadows

Question 38

What happens in refraction if the wave goes into a more dense medium?

Answer 38

It bends towards the normal

Question 39

What does refraction not happen?

Answer 39

If the wave crosses at 90*c

Question 40

What does laterally inverted mean?

Answer 40

Left side is on the right side of reflection

Question 41

What does virtual mean?

Answer 41

Cannot be touched or projected

Question 42

What does upright mean?

Answer 42

Stand infront of a mirror , you look all the way up