Plate Tectonics Crossword

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Across
  1. 1. A theory that explains how pieces of Earth’s surface (plates) move.
  2. 4. A region on Earth’s surface that is broken and where movement occurs
  3. 5. The point on Earth’s surface right above the focus of an Earthquake.
  4. 7. The idea that continents move around on Earth’s surface
  5. 8. The movement of the Earth’s crust resulting from the release of built up potential energy between two stuck tectonic plates
Down
  1. 2. Think tectonic plates that are made of basalt and form the ocean floor; denser than continental plates
  2. 3. Thick tectonic plates that are made from andesite and granite and form the continents; less dense than oceanic plates.
  3. 6. An ancient huge landmass composed of earlier forms of today’s continents; an ancient supercontinent.