Unit 8: Light

How we see, light travelling in straight lines, reflection, light in the solar system, and day, night and shadows.

• 8.1 How we see things – Light travels from a source, bounces off things and enters our eyes.
• 8.2 Light reflects off different surfaces – Shiny and smooth reflect well; dull and rough do not.
• 8.3 Light in the solar system – One star lights up all the planets and moons.
• 8.4 Day, night and shadow lengths – The spinning Earth gives us day, night and changing shadows.