Rivers

Helpful mind map on rivers.

HideShow resource information
  • Created by: konradeke
  • Created on: 07-04-14 17:34
View mindmap
  • Rivers
    • Erosion
      • Hydraulic Action
        • The sheer force of the wayer
      • Corrasion
        • The "sandpapering" effect pebbles rub against eachother
      • Abrasion
        • Rocks are thrown against the coastline
      • Attrition
        • Pebbles smaller and rounded
      • Solution
        • Dissolves bank
    • Flood Defences
      • Hard Engineering
        • Flood walls and gates
        • Channel Straightening
        • Dam
          • Advantages-Hydroelectricity, Lasts a long time
          • Disadvantages- Expensive to build, ugly and areas flooded to create
        • Concrete embankments
      • Soft Engineering
        • Soil Embankments
        • Land-use zoning
          • The positioning of less important infrastructure closer to the water (e.g car parks) and more important infrastructure further away. This protects valuable infrastructure and uses less important infrastructure as floodplains
        • Preparation (e.g sandbags)
        • Do Nothing
    • Transportation
      • Traction
        • Large boulders rolled along bottom of river
      • Saltation
        • Larger pebbles hopping along the bottom of the river
      • Suspension
        • Small rocks carried in water
      • Solution
        • Dissolved material
    • Deposition material dropped because...
      • 1. Loses velocity
      • 2.Loses discharge
      • 3. Meets end (mouth)
    • Features
      • Upper
        • Waterfalls
          • 1.Soft rock erodes faster than hard rock (undercutting)
          • 2, The hard rock is too heavy and collapses
          • 3. Retreated "gorge" and plunge pool created where hard rock fell
      • Middle
        • Meanders
      • Lower

Comments

No comments have yet been made

Similar Geography resources:

See all Geography resources »See all Water and rivers resources »