# Light and sound, reflection - refraction

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• Created by: cnwyamak1
• Created on: 24-09-15 22:33
Angle of incidence
Angle between the normal and the incident ray
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Angle of reflection
The angle between the reflected ray and the normal (line drawn at the 90 degrees to the reflecting surface)
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Concave
Curving inwards rather than bulging outwards
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Density
The ratio of mass to volume. It is usually measured in grams per cubic centimetre or grams per cubic decimetre
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Diffraction
The spreading out of waves when they pass through a gap or around an obstacle
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Longitudinal waves
A wave that moves in the same direction as the direction in which the particles are vibrating
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Prism
A block of glass or other transparent material that disperses light to form a spectrum
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Reflection
There is a reflection when waves bounce off a surface
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Refraction
Process by which a waves changes in speed and sometimes direction upon entering a denser or less dense medium
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Transverse wave
A wave that moves in a direction at right angles to the way in which the particles are vibrating
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Uniformly
Evenly
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Vacuum
A volume that contains no matter
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Wavelength
The length of a single wave, measured form one wave crest to the next
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White light
Light that is a mixture of all the frequencies of visible light, so it appears white
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## Other cards in this set

### Card 2

#### Front

The angle between the reflected ray and the normal (line drawn at the 90 degrees to the reflecting surface)

#### Back

Angle of reflection

### Card 3

#### Front

Curving inwards rather than bulging outwards

### Card 4

#### Front

The ratio of mass to volume. It is usually measured in grams per cubic centimetre or grams per cubic decimetre

### Card 5

#### Front

The spreading out of waves when they pass through a gap or around an obstacle