Planet Earth

12345678
Across
  1. 4. The large, imaginary line that splits Earth into Northern and Southern hemispheres.
  2. 5. A large, thick body of ice that moves slowly down a mountain.
  3. 6. The imaginary line on which the Earth spins.
  4. 8. large, natural stream of water flowing in a channel to the sea.
Down
  1. 1. The type of rock formed by cooled magma or lava.
  2. 2. The blanket of gases surrounding our planet.
  3. 3. The force that keeps us on the ground and pulls objects toward the center of Earth.
  4. 4. The process of wearing away soil and rock by wind or water.
  5. 6. The mixture of gases mainly nitrogen and oxygen that we breathe.
  6. 7. The planet's outermost, solid layer where we live.