What about LIGHT?
How Does Light Travel?
PHOTONS: Bundles of energy traveling in
WAVES in straight Lines.
IN SPACE:
186,000
miles/second
In WATER:
139,000
miles/second
Through GLASS:
124,000
miles/second
A light year is the distance light travels in a year:
5,880,500,000,000 miles
LUMINOUS OBJECTS: Produce their own light
1.
2.
3.
ILLUMINATED OBJECTS: Reflect Light from luminous objects
1.
2.
3.
OTHER OBJECTS
Transparent:
Air, drinking water, clear glass
Almost all light passes directly through.
We can see clearly through
Translucent:
Frosted Wax, some plastic, stain glass windows
Some light passes through
Can not see clearly and objects are fuzzy
Opaque:
Cardboard, Wood, Steel, Paper
NO light passes through
Can not see through and light is absorbed
IDEAS ABOUT LIGHT
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Light travels as "particles”…… photon.
Light travels in "waves" …..light wave.
Light travels in “straight lines”
Cool Light Show Video clip