Menu Choice Process Pg. 53 By: Noah M

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Across
  1. 3. ------ spreading is a geologic process in which tectonic plates split apart from each other.
  2. 4. A supercontinent made up of all the continents that existed millions of years ago.
  3. 5. Harry ---- discovered seafloor spreading.
Down
  1. 1. Plate ------- is a scientific theory that considers the Earth's lithosphere to comprise a number of large plates that have been moving for millions of years.
  2. 2. Alfred ------ theorized that the continents were originally were one supercontinent and moved.