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Physics > P5 - Waves > Flashcards

P5 - Waves Flashcards

(19 cards)

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1
Q

What is wavelength ?

A

The distance between a point on one wave and the same point at the next wave

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2
Q

What is amplitude ?

A

The distance from the equilibrium line to the maximum displacement

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3
Q

What is frequency ?

A

The number of waves that pass a point in a second

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4
Q

What is wave speed ?

A

The distance travelled by each wave per second

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5
Q

What is a transverse wave ?

A

Waves where the points along its length vibrate at 90 degrees to the direction of energy transfer

  • The energy transfer is perpendicular to wave motion
  • They transfer energy, but not the particles of the medium
    -They can move in solids and on the surfaces of liquids but
    not inside liquids or gases
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5
Q

What are longitudinal waves ?

A

Waves where the points along its length vibrate parallel to the direction of energy transfer

  • The energy transfer is in the same direction as the wave
    motion
  • They transfer energy, but not the particles of the medium
  • They can move in solids, liquids and gases
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5
Q

What are examples of a transverse wave ?

A
  • Electromagnetic spectrum waves
  • Ripples in water
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6
Q

What is an example of a longitudinal wave ?

A

Sound waves

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7
Q

What is the electromagnetic spectrum?

A
  • Radio waves
    -Microwaves
    -Infared radition
  • Visible light
  • Ultra violet
  • X- Ray
  • Gamma ray
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8
Q

What is the function of radio waves ?

A

Radio & TV transmissions

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9
Q

What is the function of micro waves ?

A

Microwaves ovens & Mobile phones

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10
Q

What is the function of infrared radiation ?

A

Thermal imaging, Intruder alarms

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11
Q

What is the function of visible light ?

A

Vision & photography

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12
Q

When does the EM spectrum become ionising ?

A

After visible light
- The shorter wavelength the more ionisng

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12
Q

What is the function of UV ?

A

Detecting fake bank notes, security markings

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12
Q

What is the function of gamma rays ?

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A

Treating cancer, sterilising medical equipment

13
Q

What is the function of X-ray ?

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A

Medical & security scanners

14
Q

For EM waves what is the relationship between frequency and wavelength ?

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A

The higher frequency,the shorter wavelength
The lower frequency, the longer wavelength

15
Q

What is refraction ?

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A

The bending of a wave when it passes through a material

Physics (7 decks)

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