Topic 6 Earth's Surface Systems

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Across
  1. 5. glacier formed when ice and snow build up in a mountain valley
  2. 7. loose, weathered material on Earth's surface in which plants grow
  3. 8. decayed organic material in soil
  4. 10. water that moves over land
  5. 11. pieces of crushed rock and soil
  6. 12. sediment deposited where a river flows into an ocean or lake
  7. 13. water continuously flows down a slope
  8. 15. gravity causes erosion and moves sediment downhill
  9. 16. weathering rock is changed
  10. 17. underground water that seeps into spaces in soil
  11. 20. a glacier that covers much of a continent or large island
  12. 22. principle that states that geologic processes that operate today also operated in the past
  13. 23. weathering rock is physically broken down into smaller pieces
  14. 24. flat, wide area of land along a river that floods during rainy season and is rich in nutrients
  15. 25. wind removes surface materials often leaving behind desert pavement
Down
  1. 1. the mixture of sediments that a glacier deposits directly on the surface
  2. 2. particles in wind, water, and ice rub particles against rock wearing away the rock
  3. 3. stream or river that flows into another larger river
  4. 4. the removal of rock particles by wind, water, ice, or gravity
  5. 6. some sediment gets carried away further down the shoreline with the ocean current
  6. 9. a glacier picks up rocks as it moves over the land
  7. 11. deposition of sand creating a landform
  8. 12. wind and water put down sediment
  9. 14. large mass of ice that moves slowly over land
  10. 18. sediment deposited where a stream flows out of a steep, narrow mountain valley
  11. 19. age a time period when continental glaciers covered larger parts of Earth's surface
  12. 21. wind-deposited sediment forming nutrient rich soil