. Make a crossword puzzle in relation to the 4 theories listed above

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Across
  1. 4. The process or the state of changing place or position of the body or a body part from one position to another
  2. 6. Isostasy is the rising or settling of a portion of the Earth's lithosphere that occurs when weight is removed or added in order to maintain equilibrium between buoyancy forces that push the lithosphere upward, and gravity forces that pull the lithosphere downward.
  3. 7. fused or liquefied by heat
  4. 9. Sea-floor spreading is what happens at the mid-oceanic ridge where a divergent boundary is causing two plates to move away from one another resulting in spreading of the sea floor.
  5. 12. The seabed is the bottom of the ocean. All floors of the ocean are known as 'seabeds'.
Down
  1. 1. Plate tectonics is a scientific theory that explains how major landforms are created as a result of Earth's subterranean movements.
  2. 2. Continental drift is the hypothesis that the Earth's continents have moved over geologic time relative to each other, thus appearing to have "drifted" across the ocean bed.
  3. 3. a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
  4. 5. the substance of the land surface;
  5. 8. In geology, the crust is the outermost solid shell of a rocky planet, dwarf planet, or natural satellite.
  6. 10. A lithosphere is the rigid, outermost rocky shell of a terrestrial planet or natural satellite.
  7. 11. A mid-ocean ridge is a seafloor mountain system formed by plate tectonics.