Waves Flashcards

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1
Q

Period equation

A

T = 1/f

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2
Q

Wave speed equation

A

v = f x wavelength

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3
Q

Transverse waves examples

A

Light, water ripples

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4
Q

transverse waves description

A

The vibrations are perpendicular to the direction of wave travel

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5
Q

Longitudinal waves eg

A

Sound, ultrasound

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6
Q

What do waves do

A

Transfer energy

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7
Q

Longitudinal wave description

A

Vibrations are same direction as waves

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8
Q

Wavelength

A

Distance from peak to peak

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9
Q

Time period

A

Time it takes for a wave to complete a full cycle

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10
Q

Frequency

A

Number of waves produced per second

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11
Q

Amplitude

A

Height of the wave from rest (rest to crest)

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12
Q

Wavelength units

A

metres

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13
Q

Time period units

A

Seconds

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14
Q

Unit of speed

A

metres per second (m/s)

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15
Q

Frequency units

A

Hertz (Hz)

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16
Q

What is the human hearing range

A

20-20,000 Hz

17
Q

Can sound waves travel through a vacuum

A

No

18
Q

The bigger the amplitude of a sound wave…

A

The louder the sound

19
Q

The higher the frequency of a sound wave…

A

The higher the pitch

20
Q

What measures the frequency of a sound wave

A

An oscilloscope

21
Q

What does sound travel fastest through

A

Solids as the particles are closer then in liquids/gases. The vibrations are passed from particles easier so sound travels faster

22
Q

Doppler effect explanation

A

Towards: higher frequency, smaller wavelength
Away: lower frequency, bigger wavelength

23
Q

Sound wave meets a hard flat surface

A

Sound wave is reflected back from the surface