Difference between revisions of "5-WAC-02 Reflection / Using a Raybox"
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** White paper (this now counts as part of a raybox) | ** White paper (this now counts as part of a raybox) | ||
==Main Body of Lesson== | ==Main Body of Lesson== | ||
+ | * Explain to pupils that when light strikes a surface, three things (or a combination thereof) can happen: | ||
+ | ** Absorption (e.g. blue light on a red surface) | ||
+ | ** Transmission (e.g. light through glass) | ||
+ | ** Reflection (e.g. image formation by a mirror) | ||
+ | * Be careful to note that there is usually a combination of processes: light hitting glass is not 100% transmitted - a small portion is reflected. | ||
+ | * There is a good opportunity here to talk about "one-way mirrors" and to demonstrate the effect of light levels on reflection with Pepper's Ghost. Another good example is train carriages: during the day you see out, during the night you see a reflection of the carriage's interior. | ||
+ | * Question pupils on what the "rules" governing reflection are likely to be. One will doubtlessly get the idea that | ||
==Plenary== | ==Plenary== | ||
==Homework== | ==Homework== | ||
Line 17: | Line 24: | ||
=Additional Information= | =Additional Information= | ||
===Resources Required=== | ===Resources Required=== | ||
+ | * Pepper's Ghost | ||
===Textbook References=== | ===Textbook References=== | ||
===Website References=== | ===Website References=== | ||
+ | * Gorillaz and Madonna used Pepper's Ghost at the Grammy's a few years ago: [http://www.youtube.com/watch?v=6_gnMOom7kE]. | ||
===Skills Addressed=== | ===Skills Addressed=== | ||
===Safety/Hazards=== | ===Safety/Hazards=== | ||
===Notes=== | ===Notes=== |
Revision as of 10:54, 26 October 2010
Contents
Outcomes
- Pupils can use a raybox.
- Pupils can define the term 'reflection'.
- Pupils understand the law of reflection.
Specification References
Starter
- Pupils to write down the names of all the parts of the raybox that they can remember. Check what they remembered:
- Power supply
- Bulb
- Lens
- Slit(s)
- White paper (this now counts as part of a raybox)
Main Body of Lesson
- Explain to pupils that when light strikes a surface, three things (or a combination thereof) can happen:
- Absorption (e.g. blue light on a red surface)
- Transmission (e.g. light through glass)
- Reflection (e.g. image formation by a mirror)
- Be careful to note that there is usually a combination of processes: light hitting glass is not 100% transmitted - a small portion is reflected.
- There is a good opportunity here to talk about "one-way mirrors" and to demonstrate the effect of light levels on reflection with Pepper's Ghost. Another good example is train carriages: during the day you see out, during the night you see a reflection of the carriage's interior.
- Question pupils on what the "rules" governing reflection are likely to be. One will doubtlessly get the idea that
Plenary
Homework
Additional Information
Resources Required
- Pepper's Ghost
Textbook References
Website References
- Gorillaz and Madonna used Pepper's Ghost at the Grammy's a few years ago: [1].