1. Ray Box Lab Debrief Tahoma Jr. High 8 th Grade Science Maple Valley, WA

2. Remember our frog? We happened to find a cartoon that connects our frog to reflection…

3. concave mirrorreflecting ------------ converging 1. What object causes these rays of light ?

4. convex mirrorreflecting ------------ diverging 2. What object causes these rays of light ?

5. Do you get it?? What would a “reverse concave” mirror look like?? a convex mirror!

6. convex lensrefracting ------------ converging 3. What object causes these rays of light ?

7. A drop of water becomes a “single convex” lens – flat on one side and convex on the other. It magnifies but doesn’t have enough “time/length” to make the image flip over. Next time you have a magnifying glass – hold it at arm’s length and watch what happens to the image.

8. convex lensrefracting ------------ converging 4. What object causes these rays of light ?

9. concave lensrefracting ------------ diverging 5. What object causes these rays of light ?

10. triangular prismrefracting ------------ (there’s also lots of unwanted reflections too) neither (it’s “diffusing”) 6. What object causes these rays of light ? What’s happening here?

11. ROYGBIV

13. concave and convex lensrefracting ------------ This is two opposite lenses working together. One diverges and the other converges neither 7. What object causes these rays of light ?

14. Eyeglasses use convex-concave lenses – it’s the difference between the two curves that cause the light rays to converge either a bit more quickly or slowly in order to focus properly on the retina.

15. Three Primary Color of Light are: Red, Green and Blue ( watch what happens when you mix them) http://www.lon-capa.org/~mmp/applist/RGBColor/c.htm http://mrl.nyu.edu/~perlin/experiments/colorgame/ End show