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AQA GCSE PHYSICS (PAPER 2) > Waves > Flashcards

Waves Flashcards

1
Q

What are the two types of waves?

A

•Longitudinal
•Transverse

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2
Q

What is a transverse wave?

A

A wave where the oscillations are perpendicular to the direction of energy transfer

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3
Q

What is a longitudinal wave?

A

A wave where the oscillations are parallel to the direction of energy transfer

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4
Q

Give two examples of transverse waves

A

•Electromagnetic
•Seismic S-waves
•Ripples of the surface of water

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5
Q

Give two examples of longitudinal waves.

A

•Sound waves
•Seismic P-waves

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6
Q

What are the two parts of a longitudinal wave called?

A

•Compression
•Rarefaction

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7
Q

What is a waves amplitude?

A

The maximum displacement of a point on a wave from its undisturbed position

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8
Q

What is wavelength?

A

•The distance from a point on a wave to the same position on the adjacent wave
•Most commonly Peak to peak or trough to trough

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9
Q

What is the frequency of a wave?

A

The number of waves that pass a given point each second

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10
Q

What is the unit for frequency?

A

Hertz, Hz

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11
Q

What is meant if the frequency is 200Hz?

A

200 waves pass a given point each second

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12
Q

What is wave speed?

A

•The speed at which the wave moves
OR
•The speed at which energy is transferred through a medium

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13
Q

What does a wave transfer?

A

Energy

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14
Q

State the equation used to calculate wave speed. (GIVE UNITS)

A

Wave speed (m/s) = Frequency (Hz) x Wavelength (m)

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15
Q

What word is used to describe when a wave bounces off a surface?

A

Reflection

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16
Q

How do sound waves travel through a solid? (HIGHER ONLY)

A

The particles in the solid vibrate and transfer kinetic energy through the material

17
Q

What is the frequency range of human hearing?

A

20Hz — 20kHz
(1kHz= 1000Hz)

18
Q

What are ultrasound waves?

A

Waves which have a frequency higher than the upper limit of human hearing

19
Q

Give an example for the usage of ultrasound waves.

A

Medical or Industrial imaging

20
Q

What natural even causes seismic waves to be produced? What type are produced? (HIGHER ONLY)

A

•Earthquakes
•They produce both P-waves and S-waves

21
Q

State the difference between the mediums that P-waves and S-waves can travel through. (HIGHER ONLY)

A

•P-waves travel through both solids and liquids
•S-waves only travel through solids (NOT liquids)

22
Q

What technique can be used to detect objects in deep water and measure water depth? (HIGHER ONLY)

A

•Echo Sounding
•High frequency sound waves are emitter, reflected and detected
•Time difference between emission and detection, alongside the wave speed, are used to calculate distances.

AQA GCSE PHYSICS (PAPER 2) (5 decks)

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