Item PT033001: The amount of new plate material that is added to a plate is balanced by the amount of plate material that is pushed into the earth's interior or is crumpled upward.

Which of the following statements is TRUE?

  1. New plate material is being added to the edges of plates, and no plate material is being removed.
  2. Plate material is being removed from the edges of plates, and no new plate material is being added.
  3. New plate material is being added to the edges of plates, and the same amount of plate material is being broken into pieces and carried away.
  4. New plate material is being added to the edges of plates, and the same amount of plate material is being crumpled upward or recycled back into the earth’s interior.