river erosion, transportation and deposition P1

• How many processes of river erosion are mentioned?

  Four
• Which process of erosion involves the force of water wearing away the riverbed and bank?

  Hydraulic action
• What action describes hydraulic action in river erosion?

  Water slapping against the rock face
• What is another name for abrasion?

  Corrasion
• What is the process of erosion called when there is a chemical reaction between the water and the riverbed?

  Corrosion
• How does corrasion or abrasion erode the riverbed and bank?

  By bed load scraping along the floor
• What happens to rocks during the attrition process?

  They become smaller and rounder
• How many processes of transportation are mentioned?

  Four
• Which transportation process requires the most energy?

  Traction
• Which transportation process involves the heaviest materials rolling along the riverbed?

  Traction
• What size particles are moved by saltation?

  Sand sized
• How does saltation transport materials?

  Particles bounce along the riverbed
• How are small particles like silt and clay transported in a river?

  Suspension
• What carries the particles during suspension?

  Turbulent flow
• How are minerals transported during solution?

  Dissolved in water
• Which transportation process requires the least energy?

  Solution
• What is deposition in the context of a river?

  River dropping transported material
• When does deposition occur?

  When a river loses velocity
• What causes a river to deposit material?

  Loss of velocity and energy
• What kind of motion describes how particles move during saltation?

  Leapfrog motion
• What sized particles are transported by saltation?

  Sand-sized particles
• Which transportation method requires the most energy?

  Traction
• Which type of flow is associated with the transportation of small particles in suspension?

  Turbulent flow
• In which process are minerals dissolved in water?

  Solution