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GCSE Physics > P6 - Waves 1 > Flashcards

P6 - Waves 1 Flashcards

1
Q

What are the two types of waves?

A
  1. Transverse
  2. Longitudinal
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2
Q

What is a transverse wave?

A

A wave for which the oscillations ( vibrations) are perpendicular to the direction of energy trasnfer

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3
Q

What is a longitudinal wave ?

A

A wave for which the oscillations are parallel to the direction of energy transfer

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4
Q

Give two examples of transverse waves

A
  1. Electromagnetic waves
  2. Seismic s-waves
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5
Q

Give two examples of longitudinal waves.

A
  1. Sound waves
  2. Seismic p-waves
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6
Q

What are the two parts of a longitudinal wave called ?

A

Compressions and rarefractions

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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
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9
Q

What is the frequency wave ?

A

The number of waves that pass a given point each second

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10
Q

What is the unit used for frequency

A

Hertz , Hz

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11
Q

What is meany by a frequency of 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 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 appropiate units

A

Wave Speed = Frequency x Wavelength

Speed (m/s), Frequency (HZ),
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 ?

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

20 Hz - 20kHz

(1kHz = 1000 Hz)

18
Q

What are ultrasound waves?

A

Waves which have a frequency higher than the upper limit of human hearing (20kHz).

19
Q

Give an example use for ultrasound waves ?

A

Medical or industrial imaging

20
Q

What natural event causes seismic waves to be produced ? What types are produced?

A
  • Earthquakes
  • They produce both P-waves and S-waves
21
Q

State a difference between the mediums that P-waves and S-waves can travel through

A
  • P-waves travel through both solids and liquids
  • S-waves only travel through solids (not liquids)
22
Q

What technique is used to detect objects in deep water and measure water depth ?

A

• Echo sounding
• High frequency sound waves are emitted, reflected and detected
• Time difference between emission and detection, alongside wave speed, are used to calculate distances

GCSE Physics (25 decks)

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