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# 6.3 giant mirror

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### Transcript

• 1. 6.3 Giant mirror delights villagers February 10, 2011 What's strange about these images?
• 2. 6.3 Giant mirror delights villagers February 10, 2011
• 3. Aims
• Demonstrate and explain the relationship between the angle of incidence and the angle of reflection. [Level 5]
• List examples of situations where mirrors can help people to bring light into dark areas. [Level 6]
• Devise an experiment to test whether there is a relationship between the angle of incidence and the angle of reflection. [Level 6]
• Draw on results to explain how a set of findings can confirm or disprove a pattern in nature. [Level 7]
• 4. Keywords
• Normal
• Angle of incidence
• Angle of reflection
• Laterally inverted
• 5.
• 6.
• 7. Angle of incidence
• This is the angle at which light arrives at the mirror
normal i
• 8. Angle of reflection
• This is the angle at which light leaves the mirror
normal i r
• 9. How mirrors work
• 10. Why doesn’t paper reflect like a mirror?
• 11.
• 12. 6.3 Giant mirror delights villagers Questions
• Which of these letters looks the same in a mirror as when written normally? A, B, C, D, E, F, G, H, I, J
• If you have a side parting in your hair, why does it appear to be on the opposite side when viewed in a mirror?
• If you reflect a word in a mirror and then reflect it in a second mirror, will it still be laterally inverted?
• If you increase the angle of incidence of a ray by 15°, what does this do to the angle of reflection?
1 of 2 (Level 4) (Level 5) (Level 5) (Level 6)
• 13. 6.3 Giant mirror delights villagers Questions
• If you increase the angle of incidence of a ray by 20°, how does this change the angle between the incident and reflected ray?
• The Italian villagers in Viganella had mountains on each side of them. They could have put a second mirror on the mountain that shaded them from the sun. Would this have helped as much as the mirror they set up on the opposite mountain?
• Large mirrors can be placed on the walls of rooms with small windows. How does this help brighten up the rooms compared to having a plain wall?
2 of 2 (Level 7) (Level 8) (Level 8)