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GCSE Physics ⚛️ > Topic 4 🌊📡 > Flashcards

Topic 4 🌊📡 Flashcards

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1
Q

What is the wavelength?

A

Distance from one point to the same point on the adjacent wave

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2
Q

What is velocity (v) of a wave?

A

The rate that the wave travels

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3
Q

What is the frequency of a wave?

A

Number of waves that pass a given point in a second

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4
Q

1Hz =

A

1 wave each second

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5
Q

What is a Period (T) of a wave?

A

Time taken for a complete wave to pass a given point

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6
Q

Explain.
F = 1/T

A

Frequency is the reciprocal of the period

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7
Q

What are water waves?

A

Floats on water will pop up and down when the wave passes. The wave is transferred, but the medium is not

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8
Q

What is amplitude?

A

Maximum displacement of a wave from its rest position

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9
Q

For sound waves, amplitude determines the

A

Volume of the sound

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10
Q

What is the wave front?

A

A line where all the oscillations of the wave are in phase (all at the same position in their cycle)

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11
Q

What is a longitudinal wave?

A

Oscillations parallel to the energy transfer

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12
Q

What is a transverse wave?

A

Oscillations perpendicular to the energy transfer

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13
Q

Electromagnetic radiation is a form of ______ wave?

A

Transverse

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14
Q

Compressions and rarefactions are used to describe _____ waves?

A

Longitudinal

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15
Q

What frequency does ultrasound have?

A

> 20,000 Hz

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16
Q

What can ultrasound be used for?

A

Foetal Scanning

17
Q

How does foetal scanning work?

A

Waves travel from emitter and are reflected at boundaries inside body.
Reflected waves are detected to form an image of the womb

18
Q

What frequency is infra sound?

A

< 20 Hz

19
Q

What sound waves pass through earths core?

A

Infrasound waves in particular seismic waves

20
Q

What is the human audible range?

A

20 Hz - 20 kHz

21
Q

What is Sonar? And how is it used?

A

Use the sound waves that are within the audible range. Are used to measure the depth of things underwater.

GCSE Physics ⚛️ (15 decks)

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