Across
- 2. two tectonic plates that are moving away from each other.
- 3. a planar fracture or discontinuity in a volume of rock
- 5. formed through the cooling and solidification of magma or lava
- 7. seafloor mountain system formed by plate tectonics.
- 8. formed by the accumulation or deposition of mineral or organic particles
- 11. a hypothesis originating in the early 20th century,
- 12. outermost rocky shell of a terrestrial planet or natural satellite
- 13. an opening on the surface that allows material warmer than its surroundings to escape from its interior.
- 14. arise from the transformation of existing rock to new types of rock in a process called metamorphism
Down
- 1. describes transitions through geologic time
- 4. occurs when two tectonic plates move past one another
- 6. Earth's lithosphere comprises a number of large tectonic plates, which have been slowly moving since about 3.4 billion years ago.
- 9. a solid substance with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form
- 10. two or more lithospheric plates collide