3.1.1.1 River Landscapes

• A floodplain is flat land alongside the river that gets flooded.

  True
• What are the three primary processes that form river landscapes?

  Erosion, transportation, deposition
• What happens during attrition in river landscapes?

  Rocks break down into smaller pieces
• What type of valleys are formed in high gradient environments due to dominant erosion?

  Steep valleys
• What three processes combine to shape river landscapes?

  Erosion, transportation, deposition
• In which type of gradient environment is deposition more dominant?

  Low gradient
• Deposition in river landscapes occurs in areas with low velocity
• Match the key features of river landscapes with their functions:

  Floodplain ↔️ Absorbs floodwaters, provides fertile soil

  Valley ↔️ Guides and channels river flow

  Surrounding Terrain ↔️ Influences river's gradient
• River landscapes feature landforms such as meanders, oxbow lakes, waterfalls, and floodplains
• Hydraulic action is the force of water dislodging material from the river bed and banks.


  True
• What does abrasion involve in river erosion?

  Water carrying sand and pebbles
• Order the four methods of transportation in a river from largest to smallest particle size.

  1️⃣ Traction

  2️⃣ Saltation

  3️⃣ Suspension

  4️⃣ Solution
• What is carried within the flowing water in suspension?

  Fine sediment
• What type of valley is formed in a high gradient environment due to erosion?

  V-shaped
• River landscapes are continuously shaped by erosion, transportation, and deposition.

  True
• Transportation by solution involves moving dissolved minerals in the water.


  True
• What is an oxbow lake?

  C-shaped lake
• How are meanders formed in a river channel?

  Erosion and deposition
• What is one function of aquatic habitats in river ecosystems?

  Controls water quality
• Channel migration refers to the lateral shifting of a river channel
• The shape and features of a river landscape can change significantly over time due to erosion, transportation, and deposition


  True
• How does deforestation affect river landscapes?

  Increased erosion and flooding
• The course of the river is called the channel
• Match the key components of a river landscape with their descriptions:

  River Channel ↔️ Transports water and sediment

  Floodplain ↔️ Flat land adjacent to the river

  Valley ↔️ Depression carved by the river

  Surrounding Terrain ↔️ Landscape around the river
• Abrasion occurs when water carries sand and pebbles that scour the river bed.


  True
• Order the processes that form river landscapes from erosion to deposition:

  1️⃣ Erosion

  2️⃣ Transportation

  3️⃣ Deposition
• Match the key components of a river landscape with their characteristics:

  River Channel ↔️ Transports water and sediment

  Floodplain ↔️ Absorbs floodwaters

  Valley ↔️ Guides the river's flow

  Surrounding Terrain ↔️ Influences river's gradient
• Abrasion occurs when water carries sand and pebbles that scour
• What are the four methods of transportation in river landscapes?

  Traction, saltation, suspension, solution
• What role does the floodplain play in a river landscape?

  Absorbs floodwaters
• What are the methods of transportation in river landscapes?

  Traction, saltation, suspension, solution
• What is the surrounding terrain of a river landscape responsible for?

  Influencing water input
• Hydraulic action involves the force of flowing water dislodging material from the river bed and banks.


  True
• Solution is the process by which soluble minerals in the river water dissolve.


  True
• Saltation involves smaller rocks bouncing along the river bed.


  True
• Deposition occurs when the river's velocity decreases.

  True
• The river channel is the course of the river where water flows.

  True
• Deposition occurs when the river's velocity decreases
• Oxbow lakes are formed when a meander neck narrows and erodes to create a new channel.
• Floodplains are flat lands prone to flooding due to sediment deposition during floods

  True