Science Exam - Year 9

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Physical Science

A-Level Chemistry

Last updated 4:17 AM on 6/20/23
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39 Terms

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Light energy
Energy in the form of moving waves of light
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Photons
Particles of light
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speed of light
300,000 km/s
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electromagnetic spectrum
All of the frequencies or wavelengths of electromagnetic radiation
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spectrum
band of color, broad range of related ideas or objects
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Dispersion of white light
The breaking up of a beam of white light into its constituent colours which spread out to form a spectrum
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transparent
Allowing light to pass through
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translucent
Permitting light to pass through, but not transparent
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opaque
not letting light through
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Luminous
giving off light
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Non-luminous
a substance that does not give off its own light
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Wave motion
The transfer of energy from one place to another
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wave frequency
The number of waves that pass a fixed point in a given amount of time
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Mirrors and prisms relfecting
different colors of light travel at different speeds inside the glass.
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law of reflection
the angle of incidence is equal to the angle of reflection
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Refraction
The bending of a wave as it passes at an angle from one medium to another
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light communication
bioluminescence
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equation
velocity \= wavelength x frequency
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Finding velocity
v\=fλ
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Finding frequency
f\=v/λ
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Finding wavelength
λ\=v/f
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convex
curved outward
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concave
curved inward
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Converging
Convex lens
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Diverging
Concave lens
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focal point
the point at which rays parallel to the optical axis reflect and meet
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focal distance
distance between center of lens and focal point
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Refraction away from the normal
More dense to less dense surface
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Refracting towards the normal
Less dense to more dense surface
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Speed of light
300,000 km/s
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Light year
the distance light travels in one year (9.5 trillion km)
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Photon energy forms
Heat, electicity, light
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electromagnetic wave
transverse waves that transfer electrical and magnetic energy
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Surfaces that reflect
Opaque or translucent
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incident ray
the ray that comes from an object and strikes a surface
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Reflected ray
the light ray that bounces off a surface
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angle of incidence
the angle between the incident ray and the normal
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angle of reflection
The angle between the reflected ray and the normal
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The normal
A line perpendicular to a surface