• Scientists have determined the direction that each plate is moving.
  • Plates move around the Earth’s surface at a rate of a few centimeters a year.
  • Mantle convection drives seafloor spreading.
  • Upwelling mantle at the mid-ocean ridge pushes plates outward.
  • Cold lithosphere sinking into the mantle at a subduction zone pulls the rest of the plate down with it.
  • Use the resource below to answer the questions that follow.
  • For example, what would the Earth look like without the biosphere and atmosphere?
Select from the frequently asked questions below