1. Welcome to... A Game of X’s and O’s

2. A Presentation © 2000 - All rights Reserved markedamon@hotmail.com

3. 789 456 123

4. 789 456 123 Scoreboard X O Click Here if X Wins Click Here if O Wins

5. 1 What does absorb mean?

6. 1 It means to “soak up” or take in depending on their colour. Home

7. 2 What is an artificial light source? Give an example.

8. 2 It is a light source created by humans. An example would be a candle.

9. 3 What is a natural light source? Give an example.

10. 3 It is a light source that is not created by people. An example would be the Sun.

11. 4 Define opaque material.

12. 4 A material that does not allow any light through.

13. 5 What does reflect mean?

14. 5 To cast light and bend it back in another direction, like a mirror.

15. 6 What is a shadow?

16. 6 If you place an opaque material in front of a light source, the light beam cannot bend around the object and an area of darkness-a shadow- is created.

17. 7 What are translucent materials?

18. 7 They are materials that allow some light to pass through. Clear images cannot be seen through the materials.

19. 8 What does the word transmit mean?

20. 8 To allow light to pass through space or medium (e.g. light passing through a coloured filter. )

21. 9 What are transparent materials?

22. 9 Materials that allow most light to pass through easily. Clear images can be seen through the materials.