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Light Energy and Its Sources
Getting in Light's Way
The Visible Spectrum
Properties of a Wave
The Electromagnetic Spectrum
100
A form of energy that can be detected by the human eye.
What is light?
100
A measure of how much light can pass through a material.
What is transparency?
100
The band of colours you see in a rainbow.
What is visible spectrum?
100
The farthest point above resting position.
What is the crest?
100
Can pass through skin, but not through bones.
What is x-rays?
200
Objects that do not reflect light, but only reflect light from other sources.
What is nonluminous?
200
Particles in a material let light pass through easily.
What is transparent?
200
A scientist who hypothesized that light from the Sun might be made up of several colours.
What is Isaac Newton?
200
The distance between two adjacent crests or two adjacent troughs.
What is wavelength?
200
A wave used in television.
What is radio?
300
The process of changing chemical energy into light energy.
What is chemiluminescence?
300
Particles in a material transmit light, but also reflect some, so a clear image cannot be seen through material.
What is translucent?
300
An object used by Newton to prove that white light contains the colours of the visible spectrum.
What is a prism?
300
The farthest point below the resting position.
What is the trough?
300
One wave can fit into about 1cm.
What is microwaves?
400
The process of emitting light for a short time after receiving energy from another source.
What is phosphorescence?
400
Particles in a material do not allow any light to pass through.
What is opaque?
400
We see this when all the colours of the visible spectrum are reflected.
What is white light?
400
The maximum distance above or below the resting position.
What is amplitude?
400
Helps study unusual events in distant galaxies.
What is gamma rays?
500
The process of emitting light because of high temperatures.
What is incandescence?
500
An example of this classification is clouds.
What is translucent?
500
This colour changes direction the most, therefore slowing down the most.
What is violet?
500
The number of wavelengths in a period of time.
What is frequency?
500
Up to 500 000 waves can fit into 1cm.
What is ultraviolet radiation?