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Physics > Waves GCSE > Flashcards

Waves GCSE Flashcards

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1
Q

Longitudinal waves

A

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

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2
Q

Transverse waves

A

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

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3
Q

2 examples of transverse waves

A
  1. Electromagnetic waves

2. Seismic S-Waves

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4
Q

2 examples of longitudinal waves

A
  1. Sound waves

2. Seismic P-Waves

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5
Q

Parts of a longitudinal wave

A

Compressions and Rarefactions

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6
Q

Amplitude

A

Maximum displacement of a point on a wave from its undisturbed position

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7
Q

Wavelength

A

The distance from a point on a wave to the same position on the adjacent wave

Peak to peak, or trough to trough

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8
Q

Frequency

A

Number of waves that passes a point each second

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9
Q

Unit for Frequency?

A

Hz

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10
Q

Wave speed

A

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

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11
Q

Wave speed equation

A

Wave Speed = Frequency x Wavelength

m/s = Hz X m

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12
Q

What is reflection

A

When a wave bounces off a surface

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13
Q

How do waves travel through a solid?

A

Particles in the solid vibrate and transfer kinetic energy through the material

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14
Q

What is the frequency range of human hearing?

A

20Hz - 20kHz

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15
Q

What are ultrasound waves?

A

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

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16
Q

Uses of Ultrasound waves

A

Medical imaging

Industrial imaging

17
Q

What type of waves do earthquakes produce?

A

P waves

S waves

18
Q

Difference between P and S waves?

A
  • P waves can travel through solids and liquids

- S waves can only travel through solids

19
Q

What is echo sounding?

A

A technique used to detect objects in deep water and measure water depth

High frequency sound waves are emitted, reflected and detected

Time difference between emission and detection alongside wave speed are used to CALCULATE DISTANCES

20
Q

Relationships with waves

A

Increased frequency = Increased velocity

Increased wavelength + increased velocity

Period is inversey propoertional to frequency

Smaller period, higher frequency, greater velocity

21
Q

How to measure velocity of ripples

A
  • Stroboscope
  • Same frequency as water waves
  • Measure distance between fixed ripples
  • V = f(landa)
22
Q

S waves

A
  • Transverse

- Cannot travel through liquids

23
Q

P waves

A
  • Longitudinal

- Can travel through solid and liquid

Physics (19 decks)

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