Module 2 Vocabulary

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Across
  1. 3. The process by which cooler material sinks while warmer materials rise due to differences in density, thought to be a driving force behind plate tectonic, which causes a circular motion of materials
  2. 4. the influence of closely associated species on each other in their evolution.
  3. 7. relating to, involving, or requiring an absence of free oxygen.
  4. 8. a large stable block of the earth's crust forming the nucleus of a continent.
  5. 11. not derived from living organisms.
  6. 13. dating finding the absolute age of a sample by determining the relative percentages of a radioactive parent isotope and a stable daughter isotope
  7. 14. Tectonics Theory that the lithosphere is divided into tectonic plates that move around on the atmosphere
  8. 15. Boundary The boundary or edge of two tectonic plates that are moving away from each other (Diverging). (Often forms rift zones or mid- ocean ridges)
  9. 17. a meteor that survives its passage through the earth's atmosphere such that part of it strikes the ground. More than 90 percent of meteorites are of rock, while the remainder consist wholly or partly of iron and nickel.
Down
  1. 1. each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.
  2. 2. relating to, involving, or requiring free oxygen.
  3. 3. Boundary The boundary or edge of two tectonic plates that are colliding, or converging on each other. This will either form mountain ranges if there is uplift of both plates, or if one plate goes under the other (subduction), then volcanoes usually form.
  4. 5. relating to or resulting from living things
  5. 6. decay the breakdown of a radioactive isotope into a stable isotope of the same element or of another element
  6. 9. the time needed for half of a sample of a radioactive substance to undergo radioactive decay decay to form daughter isotopes
  7. 10. Plates a massive, irregularly shaped slab of solid rock, generally composed of both continental and oceanic lithosphere.
  8. 12. the arrangement of the natural and artificial physical features of an area.
  9. 13. dating Determining whether an object or event is older or younger than other objects or events.
  10. 16. Boundary The boundary or edge of two tectonic plates that are sliding past each other (often causes earthquakes)