Across
- 4. The speed and direction of a moving object
- 6. The rapid downward sliding of a mass of earth and rock; usually move over a confined area and can be triggered by the oversteepening of slopes by erosion associated with rivers, glaciers, or ocean waves; heavy snowmelt which saturates soil and rock; or earthquakes that lead to the failure of weak slopes
- 8. the rigid, outer-most layer of Earth that includes the uppermost mantle and crust
- 10. The accumulation or laying down of matter by a natural process, as the laying down of sediments in a river
- 11. The starting material of soil consisting of rock or sediment that is subject to weathering
- 13. A mixture of weathered rock, rock fragments, decayed organic matter, water, and air
- 14. A large mass of ice moving very slowly through a valley or spreading outward from a center, which forms over many years from packed snow in areas where snow accumulates faster than it melts
- 15. A glacial feature formed as glaciers melt and leave large blocks of ice behind, which become buried in glacial sediment (till), melt, and leaving behind a large depression which fills with water
- 16. The material, chiefly sand or gravel, deposited by meltwater streams in front of a glacier
- 17. Layer of soil formed from the movement of the products of weathering
- 19. The mechanical and chemical processes that change Earth's surface over time
- 20. All of the Earth's water, including surface water (water in oceans, lakes, and rivers), groundwater (water in soil and beneath the Earth's surface), snowcover, ice, and water in the atmosphere, including water vapor
- 22. Occurs when normally dry, low-lying land is flooded by sea water
- 25. All of the organisms that live in a region
- 26. The long-term, average weather conditions that occur in a particular region
- 27. The effect of mechanical erosion of rock, esp a river bed, by rock fragments scratching and scraping it; wearing down
- 28. A temporary rise of the water level, as in a river or lake or along a seacoast, resulting in its spilling over and out of its natural or artificial confines onto land that is normally dry
- 29. An unstratified, unconsolidated mass of boulders, pebbles, sand, and mud deposited by the movement or melting of a glacier
- 31. Glacier-transported rock fragment that differs from the local bedrock, which may be embedded in till or occur on the ground surface and may range in size from pebbles to huge boulders weighing thousands of tons
- 32. downhill movement of soil and rock fragments induced by gravity
- 34. A sand hill or sand ridge formed by the wind, usually in desert regions or near lakes and oceans
- 35. A large, dry, barren region, usually having sandy or rocky soil and little or no vegetation
- 36. A mass of till (boulders, pebbles, sand, and mud) deposited by a glacier, often in the form of a long ridge
Down
- 1. The flat alluvial area at the mouth of some rivers where the mainstream splits up into several distributaries:
- 2. Flat land bordering a river and made up of alluvium (sand, silt, and clay) deposited during floods. When a river overflows, the floodplain is covered with water
- 3. The process by which the surface of the earth is worn away by the action of water, glaciers, winds, waves, etc.
- 5. A long, narrow, steep-sided ridge of coarse sand and gravel deposited by a stream flowing in or under a melting sheet of glacial ice
- 6. A very fine grained silt or clay, thought to have formed as the result of grinding by glaciers and to have been deposited by the wind
- 7. Physical processes that naturally break rocks into smaller pieces
- 9. The shape and steepness of the landscape
- 10. The breaking down of dead organisms and organic waste
- 11. Small hole or space in soil
- 12. An ocean current that moves parallel to shore
- 18. weathering The process that changes the composition of rocks and minerals due to exposure to the environment
- 21. The process that combines the element oxygen with other elements or molecules
- 23. Remains of something that was once alive
- 24. The amount of fluid passing a section of a stream in unit time is called the discharge
- 30. Rock fragments that have accumulated at the base of a cliff or slope
- 32. A sinuous curve, bend, or loop along the course of a stream or river
- 33. The degree to which something inclines; a slope
