Earth is the only planet in our solar system that has life on it. It is third nearest planet to the sun in our solar system. This solar system is in the Milky Way galaxy.
SIZE: The diameter of Earth is12 756 km, which makes it the fifth largest planet .Its circumference is 40 075km around the equator but 40 008 around the poles. 
STRUCTURE: The Earth is made up of three (3) layers called the core, the mantle and the crust. The core is made up of molten metals of iron and nickel. It is 2 900km below the surface. The mantle is about 2900km thick. The crust is the hard outer layer and lies above the mantle. About 70% of the Earth is covered in water.
ATMOSPHERE: Earth’s atmosphere is 800km thick and is made up of different gases. It protects the Earth from meteorites and the harmful rays of the sun. It is mostly nitrogen and oxygen. This is where Earth’s weather happens.
WEATHER AND CLIMATE: The temperature on Earth ranges from -88C to 58C. It is coldest at the poles and warmest around the equator. Climates are different and occur because of different temperature and rainfall.
