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Physics Y9 > Waves > Flashcards

Waves Flashcards

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1
Q

What is a longitudinal wave?

A

In longitudinal wave the medium oscillates parallel to the direction of travel of the wave

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2
Q

Give an example of longitudinal wave

A

Sound
Pressure

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3
Q

What is transverse wave?

A

In a transverse wave the medium oscillates perpendicular to the direction of travel of the wave

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4
Q

Give an example of a transverse wave

A

Water
Light

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5
Q

What does waves transfer?

A

Energy

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6
Q

What is a wavelength?

A

Distance from one point a wave to the same point on the next

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7
Q

What is a time period?

A

The time for a wave to complete one cycle

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8
Q

What is frequency?

A

Number of waves produced per second

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9
Q

What is amplitude ?

A

The height of the wave from its equilibrium position

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10
Q

Equation for time period

A

Time period=1/frequency

T=1/f

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11
Q

Equation for wave speed

A

Wave speed=frequency x wavelength
v=f x wavelength

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12
Q

What is the units for wave speed ?

A

Metres per second
m/s

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13
Q

What is the unit for frequency ?

A

Hertz
Hz

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14
Q

What is the unit for wavelength

A

Metres
m

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15
Q

What is the unit for time period ?

A

Seconds
s

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16
Q

What is the range of human hearing ?

A

20-20000HZ

17
Q

What is the order of the electromagnetic spectrum?

A

Radio waves
Microwaves
Infra red
Visible light
Ultra violet
X ray
Gamma

18
Q

What does an amplitude determine?

A

The loudness

19
Q

What does wavelength determines?

A

The pitch

20
Q

What sound would it be if the amplitude is low?

A

Quite sound

21
Q

What sound would it be if the amplitude is high?

A

Loud

22
Q

What sound would it be if the frequency is low?

A

Low pitched sound

23
Q

What sound would it be if the frequency is high?

A

High pitched sound

24
Q

What is the Doppler effect?

A

It’s the apparent shift in the wavelength of a wave when a source moves relative to an observer (towards or away)

Because the wave maintains the same speed, when the wavelength changes, the frequency is also shifted

Physics Y9 (7 decks)

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