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Grand Canyon
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Classroom Contents
Geology - Rivers and Springs
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- 1 Surface Water
- 2 Distribution of Earth's Water
- 3 The Hydrologic Cycle
- 4 Drainage Basin (Watershed) • Drainage basins (Watersheds) - Astream drains an area of land called a drainage basin - The Imaginary line separating one basin from another is called a divide
- 5 Running Water - Rivers drain much of the land area
- 6 River Systems Sediment production • Zone where most sediment is derived . Located in the headwater region of a
- 7 Streamflow • Water moves in a river channel under the influence of gravity - Water slowly flowing in a nearly straight path is called laminar fow - Water moving quickly in an erratic fashion both hor…
- 8 Flow Velocity
- 9 Dissolved Load . Most of the dissolved load is brought to a stream via groundwater • Dissolved load is not affected by stream velocity - Dissolved minerals precipitate when water chemistry changes
- 10 Suspended Load • The largest part of a stream load is carried in suspension
- 11 Settling Velocity . Amount of material carried in suspension is controlled by stream velocity and setting velocity of sediments - Settling velocity is the speed at which a particle falls through a st…
- 12 Bed Load
- 13 Capacity and Competence - Capacity is the maximum load of solid particles a stream can carry - The greater the discharge, the creater the capacity • Competence is the maximum particle size a stream c…
- 14 Shaping Stream Valleys
- 15 Grand Canyon
- 16 Alluvial Fans Alluvial fans are fan-shaped deposits of sediments at the base of mountain
