Back to index

1. Evaporation
2. Freshwater
3. Running Water
4. General
5. River Activities

• Evaporation requires energy to be added to the water molecules (heat is absorbed from the air), changing their state from a liquid to a gas.
• If you add energy to molecules, they move faster and farther apart.

• Freshwater can be grouped into three categories:
  • Surface Water
  • Ground Water
  • Glaciers

• Moving water is the single most important agent sculpting the earth's land surface
• Running water provides:
  • Energy
  • Transportation
  • Irrigation for crops

• Water makes its way to the ocean under the influence of gravity
• The time it takes to get to the ocean depends on the velocity of the river
• 3 factors determine the velocity of a stream:
  1. Gradient
     • Gradient - how steep a given part of a river is: the slope.
     • A river with a high gradient will have a high velocity
  2. Discharge
     • The discharge of a stream is the volume of water flowing past a certain point in a given unit of time
     • Dishcarge = width x depth x velocity
  3. Shape and size of channel

• There are 3 activities always occuring in rivers:
  1. Erosion
  2. Transportation
     • Solution (materials are dissolved in water)
     • Suspension (materials are carried above the floor)
     • Bed load
  3. Deposition

Copyright © 2023 Taylor Kerrihard. All Rights Reserved