River erosion and transport

  • 6,972 views
Uploaded on

 

More in: Education , Technology , Sports
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to like this
No Downloads

Views

Total Views
6,972
On Slideshare
0
From Embeds
0
Number of Embeds
1

Actions

Shares
Downloads
152
Comments
1
Likes
0

Embeds 0

No embeds

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
    No notes for slide

Transcript

  • 1. River Processes
  • 2. Roles of a river
    • Rivers have energy that means they can do work. The work they do is
    • I) Erosion
    • Ii) Transportation
    • Iii) Deposition
  • 3.  
  • 4. Types of river erosion
    • Corrosion/abrasion –the wearing away of the bed and bank by the load carried by a river.
    • Corrasion/solution – the removal of chemicals expecially calcium which causes rocks to dissolve.
    • Hydraulic action- the force of air and water on the sides of rivers and in cracks
    • Attrition - the wearing away of the load carried by a river to create smaller, rounder particles.
  • 5.  
  • 6. River Transportation
    • Saltation – process of river transport by which small particles bounce along the bed.
    • Solution – process of river transport by which material is carried dissolved in the water.
    • Suspension – process of river transport by which material is carried along within the water.
    • Traction – process of river transport by which material is rolled along the bed.
  • 7.  
  • 8.  
  • 9. Deposition
    • Deposition – when a river loses energy and drops some or all of the material it is carrying.
    • Conditions under which rivers deposit material.