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earth flash cards

for a grade so study theme

1. atmosphere 1. atmosphere- a mixture of gases that surrounds Earth: 78% nitrogen, 21% oxygen, 1% other gases, including carbon dioxide and water vapor.
2. biosphere 2. biosphere- the whole area of Earth where life exists; made up of land (lithosphere), water(hydrosphere), and air (atmosphere).
3. lithosphere 3. lithosphere- the hard, outer most layer of Earth; made up of the crust and the hard, upper part of the mantle.
4. hydrosphere 4. hydrosphere- the surface waters of Earth and the water vapor in the atmosphere.
5. tectonic plates 5. tectonic plates- large slabs of lithosphere that move around on the asthenosphere (upper mantle).
6. stress 6. stress- amount of force per unit area that is put on a given material.
7. compression 7. compression- the type of stress in which an object is squeezed, as when tectonic plates collide.
8. tension 8. tension- the type of stress in which forces act to stretch an object, as when tectonic plates pull away from each other.
9. folding 9. folding- the bending of rock layers due to stress in Earth’s crust (3 types: anticline, syncline, monocline).
10. faulting 10. faulting- when Earth’s crust breaks and the blocks of crust slide past each other (3 types: normal, reverse, strike-slip).
11. uplift 11. uplift- the process by which regions of Earth’s crust are raised to a higher elevation.
12. volcanism(volcanic mountains) 12. volcanism(volcanic mountains)- mountains form when molten rock erupts onto Earth’s surface, adding material to Earth’s surface.
13. rock cycle 13. rock cycle- the continual process by which new rock is formed rorm old rock material.
14. weathering 14. weathering- the process by which water, ice, heat, and wind act to break down rocks.
15. erosion 15. erosion- the process by which particles of rock are removed from their source; the removal and transport of rock and soil by the flow of water and by the actions of gravity, wind and ice.
16. deposition 16. deposition- the process in which water, ice, wind and gravity drop newly formed sediments.
17. rock 17. rock- a solid mixture of crystals of one or more minerals.
18. mineral 18. mineral- a naturally formed solid material with a crystal structure; has unique physical properties such as color, hardness, luster, and streak.
19. igneous rock 19. igneous rock- forms when hot liquid rock cools and hardens.
20. sedimentary rock 20. sedimentary rock- forms when rocks are broken down into smaller pieces (sediment) harden into new rock.
21. metamorphic rock 21. metamorphic rock- forms when rock is heated and /or squeezed.
Created by: moonlight1416