| Method |
Precise Learning Objective |
Linked |
Question / Activity
(Designed for maximum working out) |
Stepping Stones |
Pitstop Check
(Thinking Map) |
| W |
When a wave encounters a material it is either:
reflected;
absorbed or;
transmitted |
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What three things can happen to a wave when it encounters a material? Thought exp:
What could happen when an attacking rugby player becomes comes in contact with a defensive player. NB Stopped means energy is absorbed |
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Light (waves) travels in straight lines. We use rays to show this. |
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How do light waves travel? |
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| W |
When a wave is reflected from an object like a mirror, the angle of reflection equals the angle of incidence. |
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What is the law of reflection off a plane surface? Ray diagrams with mirrors |
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| W |
Use of ray model to explain imaging in mirrors |
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What is the symbol of a mirror for ray diagrams? Ray diagrams with mirrors to form image. |
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When a wave is reflected from an object like a mirror, it is called specular reflection. |
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What is it called when a wave hits a flat, shiny surface and bounces back? |
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In specular reflection rays are reflected at a consistent angle, allowing an image to be formed. |
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How does specular reflection allow an image to be formed? |
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Diffuse scattering occurs when rays are reflected from a surface in a variety of angles. |
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When does diffuse scattering occur? Discuss the viewing angle of a projector screen - people can see what is reflecting from the screen all around the room. So the rays of light must be reflecting in all directions.
Is there a particular angle it is brighter? There is probably a bright spot if the projector is illuminating a whiteboard. |
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Differential colour effects in absorption and diffuse reflection |
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Why does a red object look red in white light? Light from a ray box reflecting of different colour paper
NB: We only have 5 data loggers so it advisable to have half the class doing the previous |
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