Home : 2004 : January : 6
white light
By tracy
|
|
this is one that always fascinates my 6th graders. to illustrate that white light is indeed made up of all of the colors of the spectrum i have them make up color wheels. i have a w.s. for this, but it can easily be done| without it. draw 2 circles, approx 4" in diameter and divide them into 6 equal sections. (like old fashioned toy with disk spun around strings...i don't know how else to explain it) have students lightly color each section using red, orange, yellow, blue, green, and violet. glue the pieces, color sides out, to a posterboard and poke 2 holes near the center. thread string through | |
the holes, making one large loop with the wheel in the center.put index fingers into loops on either end of the string and twirl the wheel around until the string will double up on itself. pull string outwards, then inwards, over and over, causing the wheel to spin quickly...this will appear white. technically it will appear slightly yellow-ish. if they had put 7 sections instead of 6, one being indigo it would be white. hope this helps.
BACK
The ProTeacher Collection - All rights reserved
For individual use only. Do not copy, reproduce or transmit.
Copyright © 1998-2008 ProTeacher®
Visit our ProTeacher Community
What people are currently discussing in the ProTeacher Community:
|
|
