Optics 6: Colours of Light

• Physics
• Secondary Education
• Age 13

Forces and Motion

Lesson 13. 

Colours of Light

How are you today?

😒🙁😐🙂😃

Highlights of the Day

• describe how colours of light can be added, subtracted, absorbed, and reflected

• Values :  Responsibility and Determination

Spot the Colours

Challenge

• Work in pairs .
• Make a list of all the colours they can see in the projected picture.
• Answer the given questions: How many did you get? How does the number compare with other groups?

Challenge Questions

The three colours of light from which all other colours of light can be made from are the ______________.

1. primary colours
2. secondary colours

TRUE or FALSE:
The primary colours cannot be made by mixing any other colours of light.

1. TRUE
2. FALSE

Which of the following is NOT a primary colour?

1. red
2. blue
3. green
4. yellow

TRUE or FALSE:

The primary colours of light are the same from the primary colours in paints.

1. TRUE
2. FALSE

Red + Green =

Red + Blue =

Blue + Green =

Red + Green + Blue =

Yellow

Cyan

Magenta

White

• The different colours that you see on a mobile phone, computer or television are all produced from combinations of the three primary colours of light.

Forces and Motion

Lesson 13. 

Colours of Light

Light Filters (coloured filters)

What is a light filter used for?

1. remove white colours
2. remove colours from light
3. make beautiful shots

If a transparent piece of "coloured" glass or plastic is placed in front of a white light, then only the other colours of light will be transmitted (get through).

1. TRUE
2. FALSE

Self-survey: Rate your level of understanding and participation in this lesson.

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