River Dynamics and Sediment Transport

What process involves the breaking down and changing of rocks due to exposure to the environment?

• Erosion

• Deposition

• Weathering

• Transportation

Which geological process describes the movement of broken-down rock fragments from one location to another?

• Weathering

• Erosion

• Deposition

• Sedimentation

What is the term for a curve or bend in a river or stream?

• Tributary

• Watershed

• Meander

• Stream bed

What term describes the entire area of land that contributes water to a river system, including all its tributaries and groundwater?

• River channel

• Floodplain

• Watershed

• Estuary

Which factor would typically lead to a slower river flow velocity?

• Increased stream discharge

• A steeper stream bed slope

• A rounder, deeper stream channel

• A wide, flat-bottomed stream channel

Which of the following is a characteristic feature of old river systems?

• Steep slopes and fast flow velocity

• Deep, narrow channels and significant erosion

• Wide meanders and more deposition than erosion

• Straight channels and high sediment transport capacity

What happens to the size of sediments a river can transport as its flow velocity increases?

• The river can transport larger sediments.

• The river can only transport smaller sediments.

• The river's transport capacity remains unchanged.

• The river primarily transports dissolved loads.

Which type of sediment transport involves silt and clay being carried along within the body of the water?

• Dissolved load

• Bed load

• Suspended load

• Traction load

In a meandering river, where is erosion most likely to occur?

• On the outside curves where water flows fastest.

• On the inside curves where water flows slowest.

• In the straight sections of the river.

• At the deepest part of the river channel.

Consider a meandering river with points A, B, C, and D. If point D is on the outside curve of a meander, what would be the characteristic of the river bank at point D?

• A steep, eroded bank.

• A wide, flat bank due to deposition.

• A shallow, sandy bank.

• A bank with slow-moving water.