Physical Geography

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Across
  1. 4. The birth of mountains
  2. 8. Region of the upper mantle just below the lithosphere
  3. 11. The study of past climates using tree rings
  4. 12. Abbreviation; complex, computer-based climate model
  5. 13. Two words; Species that are brought and introduced to a new ecosystem
  6. 17. A migrating piece of Earth's crust, dragged about by plate tectonics
  7. 18. The inner portion of the Earth, one-third of it's entire mass
  8. 19. The dominant vegetation type extending across a region
  9. 20. Boundary transition zone between adjoining ecosystems
Down
  1. 1. Two words; Information about past environments that represent changes in climate; also called a climate proxy
  2. 2. Elevation differences in a local landscape
  3. 3. Physical weathering of rocks that occurs by mechanical forcing of rock joints
  4. 5. Two words; ecosystem that consists of pine, spruce, and fir
  5. 6. Science that analyzes and describes origin, evolutions, etc. of landforms
  6. 7. Instrument used to detect and record ground motion during an earthquake
  7. 9. Two words; Decomposition of minerals in rocks through chemical alteration
  8. 10. The study of the Earth's past climates
  9. 14. Form of weathering; associated with fragmentation of rock by pressure release
  10. 15. The largest plutonic form exposed at the surface
  11. 16. Rock of Earth's crust below the soil; unweathered