topic 4: energy transfer
- Explain how we can see luminous and non-luminous objects
- Recognise some sources of light
- Explain why shadows occur
- Describe what can happen to light when it hits an object
- Describe how light is reflected at plane (flat) surfaces
- Draw ray diagrams for mirrors
- Explain some of the uses of mirrors
- Explain how to show the Law of reflection at plane (flat) surfaces
- Describe the difference between convex and concave mirrors
- Describe how an image is produced by a curved mirror
- Recognise some of the uses of curved mirror
- Describe how light travels through a lens
- Describe how light is refracted at plane (flat) surfaces
- Recognise examples of refraction
- Describe and explain total internal reflection
- Explain how a fibre optic works
- Describe some of the uses of fibre optics
- Understand that filters and coloured objects absorb some colours (and transmit or reflect others)
- Describe what effect coloured filters have on coloured objects
- Explain the difference between the primary and secondary colours of light
- Describe some uses of colour in everyday life
- Explain why coloured objects look different in differently coloured lights
- Recognise that light travels from light sources to our eyes so we can see them
- Explain how the eye works
- Describe how eyes have evolved
Key Terms
|
light
luminous mirror normal concave focal length refraction wavelength cyan pupil ciliary muscles glaucoma |
ray
reflect periscope incient ray diverging principal focus lens electromagnetic wave magenta conjunctiva vitrious humour |
Archimedes
transparent image angle of reflection focus fibre optic spectrum colour compound eye cornea rods |
shadow
light year law of reflection endoscope virtual image internal reflection telescope filter iris optical nerve cones |
emit
angle of incidence convex converging critical angle dispersion primary colour retina sclera cataract |
Class Assignments
Light
Light Energy Wiki
Sources of Light (ppt)
Light Activity
Reflection (ppt)
Bending a Light Ray practical
Total Internal Reflection (ppt)
Total Internal Reflection worksheet
Refraction (ppt)
Questions on Refraction worksheet
Light Revision poster
Mirrors
Light and plane mirrors practical
Curved mirrors (ppt)
Curved mirrors worksheet
Color
Colors (ppt)
Eye
The eye (ppt)
Click here and complete the Webquest on Laser Eye Surgery.
Useful Links
Light
Check here for a Laws of Reflection animation demonstration
Optics for Kids
Science Spot
BBC Home Light and Shadows
Mirrors
Click here for an animation demonstration on Curved Mirrors
Have a little fun with this Bending Light simulation
Check out this video clip on Reflection and Refraction
Color
The Franklin Institute
Eye
Click here to check out a video clip on the eye
Click here for a really good interactive animation of the eye
Video Clips
Light
Light Energy Wiki
Sources of Light (ppt)
Light Activity
Reflection (ppt)
Bending a Light Ray practical
Total Internal Reflection (ppt)
Total Internal Reflection worksheet
Refraction (ppt)
Questions on Refraction worksheet
Light Revision poster
Mirrors
Light and plane mirrors practical
Curved mirrors (ppt)
Curved mirrors worksheet
Color
Colors (ppt)
Eye
The eye (ppt)
Click here and complete the Webquest on Laser Eye Surgery.
Useful Links
Light
Check here for a Laws of Reflection animation demonstration
Optics for Kids
Science Spot
BBC Home Light and Shadows
Mirrors
Click here for an animation demonstration on Curved Mirrors
Have a little fun with this Bending Light simulation
Check out this video clip on Reflection and Refraction
Color
The Franklin Institute
Eye
Click here to check out a video clip on the eye
Click here for a really good interactive animation of the eye
Video Clips
This BBC documentary, Let There be Light, embarks on the journey into the nature of light itself, which begins with a fascinating look into man's earliest beliefs.
Mirrors don't let you see things that aren't there, they let you see things from an entirely different position! Your image in a mirror is what someone else would see if they were standing behind the mirror. It's all a matter of tracing the path of light from your eye to an object, or from the object to your eye
Mirrors Tricks of Magic Shows at the Science and Technology Museum MadaTech
You won't believe your eyes when Bill Nye reflects, refracts, bends, bounces, absorbs, and pulls light waves to show how things can be seen in different ways...
Bill Nye continues his exciting discussion on light
Reflection
Refraction
We depend on our eyes more than any other sense, however many of us take this precious gift for granted. Without them, we could not experience a beautiful sunset, see the faces of our loved ones, or view the natural marvels of the world. We rely on our eyesight for so much, but most people have only a vague idea of how our eyes work. There are actually many different parts of the eye working together to form a unique self-sustaining system. Though smaller than a ping-pong ball, the eye allows us to see, while cleaning, moisturizing and disinfecting itself at the same time
Take a look... with your eye. Bill Nye will help you see how it works. You'll see things right side up that start out upside down. It's a quick trick your brain pulls. Your brain by the way is the part of your eyes that you can see
