Plate Tectonics

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Across
  1. 5. the idea that the continents are slowly drifting across the Earth.
  2. 6. the name of the supercontinent made up of all of the current continents, before they separated.
Down
  1. 1. ridges formed from the separation of oceanic plates and the magma seeping between them.
  2. 2. the last name of the scientist who proposed the idea of Pangea and continental drift.
  3. 3. Wegener used these as evidence for Pangea. He chose samples that could not fly or swim great distances.
  4. 4. samples of seafloor rock got _________ as you approach a mid ocean ridge.