Stages of River Development - SS1 Geography Past Questions and Answers - page 2
Describe two key characteristics of the lower course of a river.
The lower course of a river is typically wider and slower-flowing, and it often features levees formed by sediment deposition.
Explain the process of delta formation and why it occurs.
Deltas form as rivers meet the sea or a lake, slowing down and depositing sediment they've carried. This occurs because the river's flow velocity decreases, leading to sediment accumulation at the river's mouth.
What are some of the main types of deltas, and how do they differ from one another?
Some types of deltas include arcuate, bird's foot, estuarine, and cuspate deltas. They differ in terms of their shape and the arrangement of distributary channels.
Discuss the significance of deltas for agriculture and why the soil in deltas is often fertile.
Deltas are important for agriculture because they have rich, fertile soil. The constant deposition of sediment from the river enriches the soil, making it ideal for crop cultivation.
Why are deltas considered crucial for coastal protection, especially in the context of natural disasters?
Deltas can act as natural buffers against storm surges and coastal erosion. They help protect coastal communities from the impact of natural disasters like hurricanes and tsunamis.