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Light and optical devices
Light behavior
Electromagnetic Spectrum
Eyes and cameras
Light
100
The four properties of light
What are: Light travels in straight lines Light can be reflected Light can bend Light is a form of energy
100
The bending of light when it travels from one medium to another
What is refraction
100
A device that splits white light into its spectrum
What is a triangular prism
100
The coloured muscle which controls the size of the pupil
What is the iris
100
Colours which can be combined to produce white light
What are primary colours, or what are red, green and blue
200
A rear view mirror with the warning: "Objects in the mirror may be closer than they appear"
What is a convex mirror
200
A converging lens
What is a convex lens
200
The colour with the longest wavelength
What is red
200
Special receptors on the retina which detect colour
What are cones
200
The sensor in a digital camera
What is a CCD
300
A material that transmits no light, but absorbs or reflects it all.
What is an opaque material
300
The angle between the incoming light and the normal
What is angle of incidence
300
Part of the spectrum that can be seen by insects but not humans
What is ultraviolet
300
The nerve sending impulses from the eye to the brain
What is the optic nerve
300
A satellite that passes over us every 12 hours taking images of the earth
What is LandSat
400
Three parts of a reflecting telescope
What are: concave mirror plane mirror lens
400
The point where all light rays in a convex lens or concave mirror meet
What is the focal point
400
Half the distance between the trough and the crest of a wave
What is amplitude
400
A lens used to correct far sightedness
What is a convex lens
400
An image that is blurred because the pixels are too large
What is pixellated or low resolution
500
Light year
What is the distance travelled by light in one year
500
A fish that catches insects by shooting water at them
What is an archer fish
500
High energy radiation capable of passing through muscle but not bone
What are X rays
500
A word used to describe quality of the detail in an image
What is resolution
500
The number of ommatidia in a dragonfly eye
What is 10 000