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Junior Cert Light

Guide to teaching the topic
Word document
Light Fantastic YouTube. 6 mins Wonderfully dramatic introduction to the incredible history of light
5 Star
Syllabus
OP33

Understand that light is a form of energy and that it can be converted to other forms

Solar Power: Used to melt steel
Impressive. Youtube. Six minutes
5 Star
Solar Mirrors
 
Lots of pics of 'Solar Death Rays"
3 Star
Solar cooking home page
 
It is what it says
3 Star
Includes a look at photosynthesis and a radiometer.
3 minute video from howstuffworks
4 Star
 
A look at solar energy plants
3 minute video from howstuffworks
3 Star
OP34 

Show that light travels in straight lines and explain how shadows are formed.

Light Sources, Reflection and Shadows. Flash required
Useful introduction with Questions
3 Star
Shadows
 
Move the object or the screen to see the effects
3 Star
OP35

Understand that luminous objects are a source of light while non-luminous objects are seen as a result of light reflected from them.

Very nice explanation. 3 minute video from howstuffworks
4 Star
OP36
Recall that white light is made up of different colours which can be separated by dispersion.
OP37

Produce a spectrum of white light using appropriate apparatus, and list the colours of the spectrum.

Colour Mixing with Mr Devitt
Mr Devitt demonstrates colour mixing for the stage. MyYoutube. 10 minutes
Dispersion by a Water Sprinkler
Youtube. 2 minutes. I think this is why they say a little knowledge is a dangerous thing.
5 Star
Dispersion in rainbows
Slow-moving animation, but useful.
3 Star
OP38

Investigate the reflection of light by plane mirrors, and illustrate this using ray diagrams.

To show angle of Incidence = angle of reflection
Simple but very useful introduction
4 Star
 
Demonstrate and explain the operation of a simple periscope.
     
The boy with the iron lung gets to see the world by periscope
3 minute video from howstuffworks
3 Star
OP39

Show the refraction of light as it passes from: air to glass, air to water, glass to air, water to air.

 
Nice introduction of refraction due to light going from water to air
2 minute video from howstuffworks
4 Star
  Nice (mis)application of refraction for spearing a fish A planet scicast production. 3 mins  
  Overview
Click on the various 'Refraction' tabs for a nice interactive introduction
4 Star
Show refraction of light through a lens.
Demonstrate the operation of a magnifying glass.
 
This video demonstrates how light rays are bent by concave and convex lenses, and explains how lenses in eyeglasses work to make objects clearer.
2 minute video from howstuffworks
3 Star
Put a concave / convex lens in front of 3 rays of light and predict what wil happen
Nice 'n simple
3 Star
         
Nice black and white video on Refraction
From Scicast. 2 minutes.
4 Star
Interactive investigation of Short- and Long-sightedness
Nice 'n simple
4 Star
Drag and Drop labelling of the main parts of the eye
Basic, but quite useful
4 Star
         
Did you know you can look back in time?
Querky explanation from Youtube
4 Star