Unit 07: Investigating Plate Tectonics

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Across
  1. 2. boundaries plate boundaries where the plates are moving past each other in different directions
  2. 7. drift theory the hypothesis that the Earth’s continents were once one large landmass and have moved over geologic time relative to each other
Down
  1. 1. boundaries plate boundaries where the plates are moving apart
  2. 3. each rock layer is older than the one above it
  3. 4. mineral replacements, preserved remains, or traces of organisms that lived in the past
  4. 5. boundaries plate boundaries where the plates are moving toward each other
  5. 6. tectonics Earth's surface is broken into large pieces called plates that are constantly moving and changing at a very slow rate