Across
- 4. molten rock that is underground
- 6. energy that comes from a source and travels through space at the speed of light
- 8. long chain of oceanic islands with intense volcanic and seismic activity and orogenic processes
- 10. the geologically altered remains of a once-living organism and/or its behaviour
- 13. current, heat transfer involving the movement of energy and heat from one place to another
- 14. the movement of continents resulting from the motion of tectonic plates
- 15. when two plates come together
- 16. a lowland region that forms where Earth's tectonic plates move apart
- 18. a fracture or zone of fractures between two blocks of rock
- 20. heat is transferred by movement of a heated fluid such as air or water
- 21. large slabs of rock that divide Earth's crust
Down
- 1. a supercontinent that incorporated almost all the landmasses on Earth
- 2. a path along the Pacific Ocean with active volcanoes and frequent earthquakes
- 3. magma emerging as a liquid onto Earth's surface
- 5. heat energy is transmitted through collisions between atoms or molecules
- 7. places where plates slide sideways past each other
- 9. plate tectonics of the edge of one crustal plate descending below the edge of another
- 11. a scientific theorymajor landforms are created as a result of Earth's subterranean movements
- 12. an opening in the Earth's crust through which lava ash and gases erupt
- 17. a small area with a relatively hot temperature in comparison to its surroundings
- 19. the quantity of something per unit volume unit area or unit length