Page 331 - Microsoft Word - LessonPlan-Overview.doc
P. 331
Unit 9: Light Page 26
at the right spot to see the entire wall. (Hint – if this doesn’t work,
arc touch the ground at both ends, try using a square clear container.)
either. Stick a piece of paper on the wall
where your light beam is and
Lenses work to bend light the way outline the beam with a pencil.
you want them to. The simplest
lenses are actually prisms. Prisms 5. Shine the light at an angle up
unmix light into its different through the water so that it
wavelengths. When light hits the bounces off the surface of the
prism, most of it passes through (a water from underneath. Trace your
bit does reflect back) and changes new outline and compare… are
speed. Since the sunlight is made they both the same shape?
up of many different wavelengths
(colors), each color gets bent by 6. Add a teaspoon of milk and stir
different amounts, and you see a gently. (No milk? Try sprinkling in
rainbow out the other side. a bit of white flour.) Now shine
your flashlight through the
1. Toss one coin into a water glass container as you did in steps 4 and
(pickle jars work great) and fill 5 and notice how the beam looks.
with an inch of water. Hold the
glass up and find where you need 7. Use a round container instead of
to look to see TWO coins. Are the square… what’s the difference?
coins both the same size? Which
Answers:
one is the original coin? (Answer at
1. The smaller coin is the
the bottom of this page.)
reflection.
2. Look through the top of the 2. One coin when glanced from
glass – how many coins are there above, two from the side.
now? What about when you look 3. Four.
from the side? 4. Beam is a circle.
5. Beam is an oval.
3. Toss in a second coin – now how 6. I can see the beam through the
many are there? water!!
7. The round container distorts the
4. Remove the coins turn out the beam, and the square container
lights. Shine a flashlight beam keeps the light beam straight. Both
through the glass onto a nearby are fun!
© 2010 Supercharged Science www.ScienceLearningSpace.com
331
