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Physics Core Matey > Waves > Flashcards

Waves Flashcards

1
Q

What is displacement of the medium?

A

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

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2
Q

What is a transverse wave?

A

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

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3
Q

What is a longitudinal wave?

A

A wave in which the particles vibrate PARALLEL to the propagation

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4
Q

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

A

Up

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5
Q

What is propagation?

A

Direction of energy travel in a wave

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6
Q

What does the speed of a wave determined by?

A

The medium it travels through

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7
Q

What does higher frequency mean?

A

Shorter wave lengths because the speed is constant

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8
Q

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

A

Speed and wavelength -change

Frequency-don’t change

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9
Q

How do you work out the speed of a wave?

A

V = D/T

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10
Q

How do you work out the wavelength?

A

V=F X (wave length symbol)

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11
Q

What is amplitude?

A

Distance from the midpoint of the wave to the top

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12
Q

Properties of transverse waves?

A

Peaks + troughs

Vibrations perpendicular to propagation

Same speed through vacuum and space

E.g light waves

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13
Q

Properties of longitudinal waves?

A

Compressions and rarefactions

Particles vibrate parallel to the propagation

Usually through a medium

E.g sound

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14
Q

What is reflection?

A

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

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15
Q

What is diffraction?

A

When a wave curves around a surface

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16
Q

What is refraction?

A

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

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17
Q

Is sound transverse or longitudinal?

A

Longitudinal

18
Q

Is the speed of sound constant?

A

Hell yeah

19
Q

What happens if the period stays the same?

A

The wave will have the same frequency

20
Q

What is a period?

A

The time it takes from one crest to the next

21
Q

What do waves transfer?

A

Energy

22
Q

What don’t waves transfer?

A

Matter

23
Q

Are electromagnetic waves transverse or longitudinal?

A

Transverse

24
Q

Are mechanical waves transverse or longitudinal?

A

both

25
Q

What is maximum curving?

A

When the gap is the same as the wavelength

26
Q

How can you describe a wave?

A

By wavelength
Speed
Amplitude
Frequency

27
Q

What do waves transfer?

A

Energy not matter

28
Q

What is amplitude?

A

Maximum distance from undisturbed position

29
Q

What is wavelength ?

A

Distance from crest to crest

30
Q

What is frequency

A

Number of waves produced each second

31
Q

What are seismic waves

A

Waves that must travel through a medium

Longitudinal

32
Q

What do electromagnetic waves travel through?

A

Can travel through a medium

Also

Magnetic and electrical fields
And empty space.

(Transverse)

33
Q

What are the laws of reflection?

A

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

34
Q

What is maximum diffraction?

A

Gap is the same as the wavelength

35
Q

What does diffraction depend on?

A

Width of the gap

36
Q

Gap similar to the wavelength means?

A

Lots of spreading and no sharp shadow

37
Q

Gap not similar to the wavelength means?

A

Not a lot of spreading, sharp shadows

38
Q

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

A

It bends towards the normal

39
Q

What does refraction not happen?

A

If the wave crosses at 90*c

40
Q

What does laterally inverted mean?

A

Left side is on the right side of reflection

41
Q

What does virtual mean?

A

Cannot be touched or projected

42
Q

What does upright mean?

A

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

Physics Core Matey (8 decks)

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