rock cycle
Across
- 6. escape of molten rock (magma) at the Earth's surface
- 8. magma that erupted and is now above ground
- 12. when magma hardens above ground to form...
- 17. when the earth's surface layers begin to slant irregularly
- 18. ground shaking caused by the energy that is released when rock on either side of a fault suddenly moves.
- 20. bending of rock layers caused by compression of rocks, usually as part of mountain-building when tectonic plates collide.
- 22. when heat is added to a solid and turns to a liquid.
- 23. process by which a solid forms, where the atoms or molecules are highly organized into a structure.
- 24. high temperature
- 25. crushed or compressed
- 26. formed from magma rock hardening
Down
- 1. any trace of past life preserved in a rock (includes animal tracks & burrowsas well as shells, skeltons and impressions of soft flesh).
- 2. material deposited by water, wind or ice. Includes pebbles, sand, mud, organic remains (e.g.shells) and salts left by evaporation.
- 3. Opening through which lava and rock fragments erupt, usually within a volcanic crater.
- 4. deep cracks caused by movement of rock during earthquakes. Different rock types are often seen on each side of a fault.
- 5. the washing away of land from water.
- 7. continuous physical force exerted on or against an object by something in contact with it.
- 9. sediments, soil and rocks are added to a land form or land mass.
- 10. process of deposition of a solid material from a state of suspension or solution in a fluid
- 11. sediments are glued together by minerals that are deposited by water.
- 13. when a region is literally lifted up as the crust is squeezed by tectonic forces or, sometimes, following the melting of ice-sheets.
- 14. physical or chemical alteration by heat and pressure of an existing igneous or sedimentary material into a denser form.
- 15. the release of water from plants.
- 16. breakdown of rocks at the Earth's surface, by the action of rainwater, extremes of temperature, and biological activity.
- 19. temperature drop
- 21. when magma hardens under ground to form...