KS3 Science – TheWorksheets.CoM – Page 2

KS3 Science Independent Learning Booklets - The Polesworth School

The Earth is almost a sphere. These are its main layers, starting with the outermost: • crust (relatively thin and rocky) • mantle (has the properties of a solid, but can flow very slowly) • core (made from nickel and iron) The radius of the core is just over half the radius of the Earth. The Earth’s atmosphere surrounds the Earth.