1. Do now!
normal
Can you continue with the experiment we started yesterday. Can you measure (using a protractor) the angles between the beams and the normal?

2. Last lesson Speed of light and sound Reflection of light
Using ray boxes

3. Light travels faster than sound
Speed of light = m/s
Speed of sound (in air) = 330 m/s
Light travels almost a million times faster!

4. Using ray boxes

5. Reflection
normal

6. Today’s lesson
The law of reflection
“Mirror Island”

7. Can you follow Mr Porter?

8. Angle of incidence = Angle of reflection
Normal
Incident ray
Reflected ray
Angle of incidence
Angle of reflection
Mirror

9. Law of Reflection angle of incidence = angle of reflection
Can you copy please?
normal
Angle of incidence
Angle of reflection
mirror
angle of incidence = angle of reflection

10. Mirror Island

11. Homework
Mirror Island 2 – Due next Wednesday 20th January.

12. There’s another dog there, I must sniff its bottom.
Images in mirrors
There’s another dog there, I must sniff its bottom.

13. Images in mirrors The image is the same size as the object
The image appears to be the same distance from the mirror as the object
The image is laterally inverted (left is right and right is left)

14. Mirror Writing

16. Can you mirror write?
Roses are red Violets are blue Some poems rhyme But this one doesn’t!

17. A message to Mr Porter
Mr Porter is going to collect your books in to mark. Can you write him a message in mirror writing?