Unit 6: The Earth and the Sun

Why we have day and night, how the Sun seems to move, and how shadows change during the day.

• 6.1 Day and night – The Earth spins – that is why we have day and night.
• 6.2 Does the Sun move? – The Sun seems to travel across the sky – but does it?
• 6.3 Changing shadows – Shadows grow, shrink and move as the Sun moves.