1. Explain the difference between luminous and non-luminous objects.
Introducing Light
Explain the difference between luminous and non-luminous objects.

2. What objects can you see from where you are sitting that make their own light?

3. Luminous Sources
A luminous source is an object that can create light. Let’s see how many we can name in 90 seconds!

4. Luminous Sources The most important luminous source is the sun.
Others include:
Fire
Electric Lights
Fireworks
Lightning

5. Non-Luminous Objects
Non-luminous objects do not create light. So how are we able to see them? We can see non-luminous objects because of the light reflected off of them.

7. Objects which make their own light are ……………………
Objects which do not make their own light are ……………………
Non-luminous objects

8. Luminous Source Worksheet
Circle the luminous sources
Label the luminous sources
Draw how the one-armed man would be able to watch television.
Draw how the man would be able to see the chair.

9. Answers

10. Properties of Light
Light travels in straight lines:

11. Light travels VERY FAST
About 300,000 kilometres per second.

13. Fact or Opinion?
What is the difference between fact and opinion? Clue: If it is a fact then you could prove it is correct with an experiment! Over many centuries, people have had very different opinions about what light is and how we see things.

14. Which are fact and which are opinion?
Scientific Fact
Opinion
Which are fact and which are opinion?
Light travels in straight lines.
An object has to be luminous to be visible.
Luminous objects give off light because they are hot.
If you close your eyes then the universe may not exist until you open them.
When you look at something, light travels from your eyes to the object.

15. Under The Sea
Deep in the sea... It can be so deep that light from the sun can not be seen. How can animals survive down here?
Video Clip

16. Bioluminescence
Bioluminescence is where organisms are able to create their own light. These organisms are luminous sources.

17. Luminous Source Wipeout!
Find the 15 Luminous Sources Avoid the Non-Luminous Objects!!!

18.                MAGNESIUM REACTING WITH OXYGEN
Television 
Flame 
MIRROR
Neon Sign 
OTHER
PLANETS
SWISS
CHEESE
GLASS
Torch 
DIAMONDS
RAINBOW
FIREWORKS 
Anglerfish 
AA BATTERY
THE HUMAN
EYE
LAMP 
Firefly 
REFLECTOR
JACKETS   
COUNTRY
MUSIC
LIGHT BULB 
SPARKLERS
THE MOON
LIGHTNING
THE SUN
Stars 
BICYCLE
REFLECTORS
SNOW
Computer
Screen 
THUNDER
PLATINUM
EAR RINGS