G-G-G-G-Geology Crossword

2. Process by which new oceanic crust forms along a mid-ocean ridge and older crust moves away.
4. Rock type that crystallizes at depth within the Earth’s crust.
6. Rock formed from magma erupted onto the surface.
8. Wegener's theory of continents moving over geologic time.
9. Type of rock formed through the cooling and solidification of magma or lava.
10. Region of volcanic activity not associated with plate boundaries.
11. Geological process in which sediments, soil, and rocks are added to a landform.
12. Location where tectonic plates slide sideways past each other.
16. The breaking down of rocks, soil, and minerals through contact with the Earth's atmosphere.
18. Seismic events caused by the shifting of tectonic plates.
19. Plate boundary where two tectonic plates collide.

1. Sediments piled up where a tectonic plate is being subducted under another.
3. Process by which soil and rock are removed from the Earth's surface by wind or water flow.
5. Plate boundary where to tectonic plates are moving apart.
7. Mountains formed by lava, tephra, and ash eruptions.
13. Rock type formed by the accumulation or deposition of mineral or organic particles.
14. Area where one tectonic plate slides beneath another.
15. Theory that explains the global movements of Earth's lithosphere.
17. Rock type altered in structure or composition by heat, pressure, or other activity.