1. The Earth spins on its axis like a spinning top. This spinning motion is called rotation.
2. An axis is an imaginary line that goes through the centre of the Earth. It links the north pole to the south pole.
3. The earth rotates from west to east.
4. a) The Earth takes 24 hours to make one complete rotation.
b) It takes one year to make one complete movement round the Sun. This movement is called a revolution.