Chapter 8: How we see

By the end of this chapter you will be able to

• Sort objects into light sources and objects that reflect light
• Explain that we see an object because light from it, or reflected from it, enters the eye
• Describe the path of light from a source to the eye, directly or by reflection
• Use the rule that the angle of the incoming ray equals the angle of the reflected ray, with a mirror
• Name the main parts of the eye and say what each one does
• Describe safe ways to use mirrors and light, and never look at the Sun

You should already know

• Light travels in straight lines, and light sources and shadows (Chapter 7 of this book)
• Light and shadows, and how light is blocked (Year 3 Science, Chapter 8)

Where this leads

• Light in more detail, including refraction and lenses, in later science