Across
- 3. alteration in the shape or dimensions of an object as a result of the application of stress to it
- 4. a rigid layer of the Earth's crust that is believed to drift slowly
- 9. the gradual movement of very large land masses
- 14. of or relating to or characteristic of the crust of the earth or moon
- 15. tending to come together from different directions
- 17. the movement or study of the movement of Earth's crust
- 18. a solid inorganic substance occurring in nature
- 19. the lower layer of the crust
Down
- 1. molten rock in the earth's crust
- 2. the relatively shallow seabed surrounding a continent
- 4. a property used to characterize materials in reactions that change their identity
- 5. movement of the edge of one tectonic plate under another
- 6. a salt or ester derived from silicic acid
- 7. a long narrow depression in a surface
- 8. the part of the Earth consisting of the crust and mantle
- 10. the branch of geology studying the folding and faulting of the earth's crust
- 11. the central part of the Earth
- 12. the part of a rock formation that appears above the surface
- 13. (plate tectonics) a hypothetical continent including all the landmass of the earth prior to the Triassic period when it split into Laurasia and Gondwanaland
- 16. the phenomena associated with volcanic activity