# LIGHT ENERGY COLOR

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```					      Unit Overview
•Energy in Different forms
•Traveling Heat
•Why are you taller than me?
•Color Matters
•Do you see what I see?
•Scavenger Hunt
What is Energy?
• Energy is the ability to do work. There are different
types of energy forms that are either potential or
kinetic energy.

Potential Energy:
• Potential Energy comes in forms that are stored.
ie. Chemical & Mechanical Energy
Kinetic Energy:
• Kinetic Energy forms are doing work.
ie. Electrical, Heat, Light and Sound Energy.
What are some different forms of Energy?
• Mechanical Energy- is the sum of both kinetic and potential energy.
I.e. running, lifting weights, pushing a car e.t.c

• Light Energy- is a form of energy that travels in waves.
I.e. lit candle, light bulb, the sun e.t.c

• Sound Energy- is created when a wavelength travels
through solid, liquid or gas and creates various
frequencies.
I.e. beating a drum, playing a flute, e.t.c

• Heat Energy- is the flow of energy from a warmer
object to a cooler object.
I.e. heater, sun rays, fire e.t.c
Heat Transfer

The handle
Heat        Heat        Ice-                               Getting
Ice        of a spoon
energy      emitted     cream                 heating up
burned
melting
melting                 from
emitted     from a                 in hot     when
touching
on a hot              placed
from the    light                  liquids.                a hot
day.                  inside hot
sun.        bulb.                             soup.
stove.
• A shadow is created when light is                      The length of my shadow throughout the day.

blocked by an object. If an object is              60
opaque or translucent, light is unable             50
54                                              52
48
to pass through and a shadow is                    40
46

Inches
36
created.                                           30
34
25
Why is the size of your                            20
10
Height of

shadow affected by a lights                        0

distance?
9 a.m    10 a.m 11 a.m 12 p.m    1 p.m   2 p.m   3 p.m
Time

• The closer an object is to light,
the taller the shadow, and the
This graph shows the shadow of a student
further away an object is to light, the    who measures 48 inches in height
shorter the shadow.                        throughout the day.
Does Light Have Color?
White light is made of color. It is made up of a mixture of the seven colors of the
rainbow.

A prism can separate white light into a group of colors called the spectrum.
WHAT MAKES A RAINBOW
• A rainbow is an arched light that is separated into bands
of color stripes. It appears when the sun’s rays are bent
and reflected by drops of rain.

• Immediately after a rain shower, thousands of water
droplets are left floating in the air. As sunlight passes
through these spherical droplets, light is bent and
scattered into a continuous band of colors.

• This light is reflected off the back of the raindrop and
refracted again as it leaves the drop.

• The light coming from several of the raindrops creates a
rainbow.
Does color matter?
• Have you ever thought about why people
wear dark colors in winter and light colors
in the summer?

• Dark colors absorb light. Absorbing light
makes dark colors warmer.

• Light colors reflect light so they are cooler.
ROY G BIV Song by Mr. Ray

•   ROY G BIV

chorus
I know a boy named Roy G Biv
Up in the sky is where he lives
His name stands for the colors of the rainbow
This is the story of Roy G Biv

Red is the color of the bouncing ball
We play with every day
Orange is the color and the name of
The juiciest fruit I know

repeat chorus

Yellow is the color of the smiling sun
Keeps us warm with it’s loving rays
Green is the color of the nice, soft grass
In the summer when we play

chorus

Blue is the color of the great big sky
Where all the birds fly above
Indigos’ the color of the nighttime sky
Where all the twinkling stars put on a show
Violet is the color and the name of
The prettiest flower i know

last chorus
I know a boy named Roy G Biv
Up in the sky is where he lives
His name stands for the colors of the rainbow
That was the story of Roy G Biv
What is light? What makes a rainbow?
Go to http://www.kidsbuilder.com/FunFactsForKids/light.html
to find out.

What is Energy? List three forms of energy with
examples.
Go to
http://www.childrensuniversity.manchester.ac.uk/interactives/science/energy/whatisenergy.asp
to find out.

Name the colors of the color spectrum in order. What color absorbs the most heat? Least
heat? Why?
Go to http://library.thinkquest.org/28160/english/color/color.html to find out.

Filamentality Site:
http://www.kn.att.com/wired/fil/pages/listlightean.html
Shortest? Why?
Go to
http://www.bbc.co.uk/schools/ks2bitesize/science/physical_pr
to find out.

List and define three ways heat can be transferred from one
object to another.
Go to
http://coolcosmos.ipac.caltech.edu/cosmic_classroom/light_l
essons/thermal/transfer.html to find out.

Filamentality Site:
http://www.kn.att.com/wired/fil/pages/listlightean.html

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 views: 6 posted: 7/28/2012 language: English pages: 12