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science time > Sound: made by Ruby > Flashcards

Sound: made by Ruby Flashcards

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1
Q

Which waves are fastest?

  • Light
  • Sound
  • Water
A

Light

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2
Q

What type of waves are sound waves?

  • Water
  • Longitudinal
  • Transverse
A

Longitudinal

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3
Q

What part of the ear collects sounds?

  • Ear drum
  • Ear canal
  • Pinna
A

Pinna

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4
Q

What is the diaphragm in a telephone most like?

  • Ear drum
  • Ossicles
  • Ear canal
A

Ear Drum

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5
Q

What is the amplitude of a wave?

  • The distance between the same two points on a wave
  • The maximum height of the wave
  • The number of waves per second
A

The maximum height of the wave

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6
Q

What is the wavelength of a wave?

  • The maximum height of the wave
  • The number of waves per second
  • The distance between the same two points on a wave
A

The distance between the same two points on a wave

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7
Q

What is the frequency of a wave?

  • The number of waves per second
  • The distance between the same two points on a wave
  • The maximum height of the wave
A

The number of waves per second

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8
Q

In which does sound travel fastest?

  • Liquids
  • Solids
  • Gases
A

Solids

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9
Q

Above what frequency is ultrasound?

  • 10 000 Hz
  • 20 Hz
  • 20 000 Hz
A

20 000 Hz

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10
Q

What do we use ultrasound for?

  • Taking photos of unborn babies
  • Taking photos of jewellery
  • Cleaning babies
A

Taking photos of unborn babies

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11
Q

What type of waves are light?

  • Transverse
  • Longitudinal
  • Water
A

Transverse

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12
Q

Why are some objects transparent?

  • Some light passes through them
  • All light passes through them
  • No light passes through them
A

All light passes through them

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13
Q

Which travels most quickly?

  • Water waves
  • Sound waves
  • Light waves
A

Light waves

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14
Q

The angle of incidence always equals what?

  • The angle of reflection
  • The angle of dispersion
  • The angle of exodus
A

The angle of reflection

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15
Q

Why does light refract?

  • Its size changes
  • Its speed changes
  • Its shape changes
A

Its speed changes

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16
Q

What type of lens focuses light on a point?

  • Dispersing
  • Concave lens
  • Converging
A

Converging

17
Q

Which of these colours is not found in the spectrum?

  • Cyan
  • Yellow
  • Green
A

Cyan

18
Q

What are the three primary colours in light?

  • Red, green and yellow
  • Red, green and blue
  • Red, blue and yellow
A

Red, green and blue

19
Q

What is the retina?

  • The part of your eye that sends the image to your brain
  • The part of your eye that focuses light
  • The light-sensitive section at the back of your eye
A

The light-sensitive section at the back of your eye

20
Q

What type of reflection is seen in a mirror?

  • Specular
  • Diffuse
  • Normal
A

Specular

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