Higher:
Is able to explain what happens when coloured lights are mixed
Middle:
Describes when certain colours of light cause sensitivity in people's eyes
Lower:
Can identify occasions when colour is mixed using lights
Higher:
Detail the findings of observations and records the data in a form; graphs, writing, diagrams
Middle:
Conducts an investigation and makes full observations of the results
Lower:
Is able to set up a fair investigation into light colour mixing
Lesson Recap Starter: Think back to the last lesson. Why does water bend light?
Lesson Starter: What paint colours do you need to mix in order to create purple, orange and green?
Ask pupils if they have been to a place where coloured lights are mixed like a wedding reception disco, or a school play? Ask them what sort of effects they have observed?
Presentation - Starter Slide.
As pupils look at the difference between mixing colour pigments and paints, and the effects of coloured light mixing, ask them to record the difference. Also, discuss the occupation of a lighting engineer in a theatre, what do pupils think they have to learn? Talk about using green screens and filters to help people to read. Pupils should answer questions and take part in activities during the presentation.
Key Concept:
During this unit, each lesson contains a key concept question housed in the '30 Second Challenge' slide. To help children master this content so the knowledge moves from their short term memory to their long term memory, at the beginning of the follow on lesson the question from the previous lesson is revisited.
The questions covered during this unit include:
1. How are shadows created? Why do shadows change during the day?
2. Why are transparent materials useful?
3. Provide three examples that explain the different uses of lenses.
4. What is white light?
5. Why does water bend light?
6. When is light colour mixing used in industry and how?
Presentation
The following activity is an opportunity to extend the learning of higher ability pupils. It is not a mandatory requirement of NC KS [1/2]. It is at the professional judgement of an individual teacher as to whether this work is covered – and only if time and opportunity allow, and targeted to an individual pupil, or groups of pupils.
Use and interact with the PhET simulation, and learn more about light colour mixing.
Expert Film: Jon Badgery talks about light
How we deliver the Gatsby Benchmarks:
2 - Learning from career and labour market information: Pop along to Developing Experts career’s zone to find out about jobs in your area.
4 - Linking curriculum learning to careers: This unit showcases careers that relate to light. Access our 360° virtual work tours.
7 - Encounters with Further and Higher Education: Pop along to Developing Experts career’s zone to find out about training providers in your area.
Presentation - Expert Film
Colour Mixing
This activity should be done in a dark room.
Colour Mixing
Quiz
With their talk partners, the children are to go through the quiz at the end of the presentation and answer the questions.
Quiz in presentation
Can children explain how light behaves when different colours are mixed?
Why did the papers look white, red, blue, and green (respectively) in white light?
How did the filters affect the white torch beam?
Why did the yellow and green papers seem to lose their colour when red light was shined on them?
Quizzes in pupil zone.
Unit knowledge organiser and test available in unit documents area.
Red and blue makes...
Yellow and blue makes...
Red and yellow makes...
The Science Behind the Science
The primary colours are red, yellow and blue with respect to paint. They can be mixed to make secondary colours: red and yellow paint can be mixed to make orange, red and blue paint can be mixed to make purple, and yellow and blue paint can be mixed to make green. On the other hand, the colours of ink used by printers are cyan, magenta and yellow (and black) whereas the colours of light used in electronic screens are red, green and blue.
Objects show colour because they absorb and reflect certain wavelengths of white light. For example, a red ball appears red to us because it only reflects the red part of the light spectrum and absorbs the other wavelengths. Colour filters (used in stage lighting for example) are transparent materials that work in the same way. They block specific wavelengths of light and allow others to pass through.
Light enters the human eye through the cornea and then passes through the pupil. It is focussed by the lens to a section at the back of the eye called the retina. Cells in the retina are stimulated by light and send messages to the brain via the optic nerve to let us know what we are seeing. The two types of receptors in the retina are called rods and cones. Rods are not involved in colour vision and help us to see at low light levels. Cones are involved in colour vision and spatial resolution and help us to see at high light levels. There are specific cones to detect blue, red or green light.
Exploring the way that light behaves, including light sources, reflection and shadows.
Forces, electricity and waves - Vibrations and waves - By exploring radiations beyond the visible, I can describe a selected application, discussing the advantages and limitations. SCN 3-11b Forces, electricity and waves - Vibrations and waves - By carrying out a comparison of the properties of parts of the electromagnetic spectrum beyond the visible, I can explain the use of radiation and discuss how this has impacted upon society and our quality of life. SCN 4-11b
Forces and Energy: the study of energy, its origin, storage and transfer and the work it can do; the study of forces; the application of scientific understanding through inventions and machines.
Carrying out comparative and fair tests. Planning different types of scientific enquiries to answer questions, including recognising and controlling variables where necessary.
Planning different types of scientific enquiries to answer questions, including recognising and controlling variables where necessary.
Grade 6 Light, Shadows and Reflection
Describes the coloured light band formed by the sun passing through the prism and knowing that the sun contains different colours of light
