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Introduction
Introduction
In this topic we will be reviewing the reflection and refraction of light. We will then be applying this knowledge to look at how the absorption, transmission or reflection of different colours affects the appearance of objects and light. Finally, we will be looking at how different lenses work and the types of image they produce.
Task 1: Know
Task 1: Know
Task 1a: Use look, cover, write check and quizlet to learn the answers to the core questions and the keywords for this topic
Task 1b: Listen to the podcast to get an overview of this topic
Learn
Learn
Task 2 - Reflection
Task 2 - Reflection
Task 2c: Make notes that:
Define the normal.
Define the law of reflection and draw a diagram to illustrate it happening at a plane mirror.
Define specular reflection.
Define diffuse reflection.
Use the key points on slide 17 to ensure you have covered all the key points.
Task 2d: Complete the exam question
Task 3 - Refraction
Task 3 - Refraction
Task 3a : Watch the video on Refraction
Task 3b: Watch the video on the Refraction required practical
Task 3d: Make notes that:
Define refraction.
Draw a simple ray diagram showing how the path of light changes when it passes from air into a glass block and then out the other side.
Use slide 11 to make notes, ideally annotating your ray diagram, to explain the changes in direction.
Check your understanding by answering the questions on slides 12 to 14.
Task 3e: Complete the exam questions
Task 4 - Light and Colour
Task 4 - Light and Colour
Task 4c: Make notes that
Define opaque, translucent and transparent.
Explain what determines the colour of light (Clue - From 1m 8s into the video will help you with this).
Draw the diagram on the left of slide 13 to remind you how different colours of light can be combined.
Use the video (from 1m 38s) to make notes on how colour filters work. Draw a diagram of the red filter used as an example to help memorise how they work.
Explain what determines the colour of an opaque object (From 2m 29s in the video will help). Draw, draw, draw...different coloured filters and objects to make sure you understand how it works.
Task 4d: Complete the exam questions
Task 5 - Using lenses
Task 5 - Using lenses
Task 5c: Make notes that:
Define a lens
Draw ray diagrams and annotate them to show the rules you need to follow to construct different types of image:
1. How a convex lens forms a real image if the object is further away than the principal focus.
2. How a convex lens forms a virtual image if the object is nearer than the principal focus.
3. When an object is placed between a convex lens and its principal focus, the image formed is virtual, upright, magnified and on the same side of the lens as the object.
State the equation used to calculate magnification.
Check your understanding by answering the textbook questions on slides 27-29.
Task 5d: Complete the exam questions
Task 6: Summary
Task 6: Summary
Task 6a: Watch the videos for a refresh/reminder:
Task 6b: Complete these seneca learning units
Task 6c: Make a mind map or single page revision summary of this topic and add it to your revision folder.
Task 7: Check
Task 7: Check
Complete the quiz to make sure you understand this unit.
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