Item PT017001: The layer beneath earth's plates slowly moves in different directions in different places around the earth.

Which of the following describes the layer directly beneath earth’s plates?

  1. It moves very rapidly, and it moves in different directions in different places.
  2. It moves very slowly, and it moves in different directions in different places.
  3. It moves very slowly, and it moves in one direction around the earth.
  4. It does not move.