THE COLORS OF THE RAINBOW: http://www.manteno.k12.il.us/mczerwionka/webquest.htm
This internet activity is aimed specifically at kindergarten classes to learn their colors, color poems, and to read and spell color words.
First we should think of this: WHAT IS WHITE LIGHT? The white light from the sun is made up of different colors. White light contains all the colors of the visible spectrum. The colors of the visible spectrum are red, orange, yellow, green, blue, indigo and violet. You can remember these colors simply by:
There is also a cute sentence to remember:
The rainbow is made up of all the colors of the visible spectrum. We can also see these colors by using a prism. When white light passes through a prism, it is bent. Each color is bent differently. Red is bent the least, violet is bent the most. The white light spreads out into its colors. Each color of the visible spectrum can be seen.
A
rainbow is an arch of light exhibiting the spectrum
colors in their order, caused by drops of water falling through the air. It is
seen usually in the sky opposite to the sun at the close of a shower and also in
the spray of waterfalls. In the brightest or primary bow, often the only one
seen, the colors are arranged with the red outside. Above the perfect bow is a
secondary bow, in which the colors are arranged in reverse order; this bow is
dimmer, because of a double reflection within the drops.
When
the sunlight enters a raindrop it is refracted, or bent, by and reflected from
the drop in such a way that the light appears as a spectrum of colors. The
colors can be seen, however, only when the angle of reflection between the sun,
the drop of water, and the observer's line of vision is between 40° and 42°.
When
the sun is low in the sky the rainbow appears relatively high; as the sun rises
higher, the rainbow appears lower in the sky, maintaining the critical 40°- to
42°-angle. When the sun is more than 42° above the horizon no rainbow can be
seen because the required angle passes over the head of the observer.
Some of this is from:
"Rainbow," Microsoft® Encarta® Online Encyclopedia 2000
http://encarta.msn.com © 1997-2000 Microsoft Corporation.
