Planet Earth
Planet Earth is often called ‘the blue planet’ because it’s made up mostly of
water. It has different layers. Some of these layers are under the surface,
and there’s also the atmosphere, which is all around the Earth. Planet
Earth is always moving. Its movements cause the different seasons. They
also produce day and night. By the end of this unit you will know about the
Earth’s movements and layers, and about how we represent our planet.
L O O K & R E A D
1
UNIT
