IGCSE Y7 Geography - River flooding

Front

What is river flooding?

Back

River flooding occurs when water overflows the banks of a river, often due to heavy rainfall, melting snow, or other factors that increase water flow.

Front

What are the main causes of river flooding?

Back

The main causes include heavy rainfall, rapid snowmelt, urbanization, deforestation, and steep slopes.

Front

What does impermeable mean in the context of geology?

Back

Impermeable refers to materials that do not allow water to pass through them, such as clay or solid rock.

Front

What is the impact of urbanization on river flooding?

Back

Urbanization increases the amount of impermeable surfaces (like roads and buildings), leading to more runoff and a higher risk of flooding.

Front

How do steep slopes contribute to flooding?

Back

Steep slopes can lead to faster runoff of water into rivers, increasing the likelihood of flooding.

Front

What role do trees play in preventing flooding?

Back

Trees help absorb water and reduce runoff, which can mitigate the risk of flooding.

Front

What is the difference between permeable and impermeable rocks?

Back

Permeable rocks allow water to pass through, while impermeable rocks do not.

Front

Why are settlements often located near rivers?

Back

Settlements are located near rivers for water supply, transportation, and fertile land for agriculture.

Front

What is the significance of riverbanks?

Back

Riverbanks are the sides of a river that help contain the water; if they overflow, flooding occurs.

Front

What is a floodplain?

Back

A floodplain is the flat area surrounding a river that is prone to flooding during high water events.