Light I

1
Light I

• 6th Grade Science
• By Paula Smith

Start Show
Teacher Page
2
Light is in the middle of the electromagnetic
spectrum.

• Visible light is the part of the electromagnetic
  spectrum that we can see.

3
Light is really fast!

• How fast?

About 186,000 miles per second! That means light
from the sun takes about 8 minutes to go the 93
million miles to earth.

• Does this seem SLOW? Well, if you could DRIVE to
  the sun at 60 mph, it would take you 177 years to
  get there! In one second, light can go around the
  earth 7 times!

4
Light Sources

• Luminous objects produce their own light.

Back to Activity
5
Illuminated Sources of Light

• Illuminated objects reflect light. They do not
  produce their own light.

Back to Activity
6
Light Sources

• Artificial light sources are caused by something,
  usually man. Fire is considered to be an
  artificial light source because the fuel doesnt
  give light unless it combusts.

Back to Activity
7
Light Sources

• Natural light sources are not made by man.

Back to Activity
8
Sources of Light

• Our most important natural source of light is the
  sun.

• Our most important artificial source of light is
  electricity.

9
You Try It!
Possible Answers

• Sort the following sources of light into the
  categories of luminous, illuminated, natural, and
  artificial. You will use the words more than
  once. Be ready to explain your reasoning.
• Lightning fire light bulb candle
• Electric eel sun moon planets
• bike reflectors stars fireflies match
• flashlight fireworks volcano mirror

Hint Luminous
Hint Illuminated
Hint Natural
Hint Artificial
End Show
10
Teacher Page

• Objectives The learner will
• Sort sources of light using the terms luminous,
  illuminated, natural, and artificial.
• Know the speed of light.
• Know that the sun is our most important natural
  source of light, and electricity is our most
  important artificial source of light.
• Students will need a piece of paper and pencil to
  do the You Try It! slide. It might be helpful to
  have them work in groups to solve the slide. The
  students must be able to explain why they grouped
  the light sources as they did. If the grouping
  is logical, they are correct.

11
Possible answers to You Try It! If students can
logically explain their categories, they are
correct.
Exit
Back to quiz
Start show