Flood Risk and Water Management Concepts

This video explores the natural causes of flooding, focusing on the hydrological cycle, weather events, relief, and geology. It explains how these factors contribute to flood risk, with examples like the Somerset level floodings and Storm Desmond in the Lake District.

What is the process called when water is lost from vegetation?

• Evaporation

• Condensation

• Transpiration

• Precipitation

Which term describes water seeping into the soil?

• Percolation

• Infiltration

• Surface runoff

• Groundwater flow

Which process involves water flowing horizontally through the soil?

• Through flow

• Surface runoff

• Infiltration

• Percolation

What happens to the water table when it reaches the upper level of saturated rock and soil?

• It absorbs more water.

• It stops absorbing water.

• It evaporates.

• It causes a drought.

What type of flood is caused by prolonged heavy rainfall?

• Slow building flood

• Snowmelt flood

• Drought flood

• Flash flood

What is a common cause of flash floods?

• Drought

• Prolonged light rain

• Sudden heavy downpours

• Snowmelt

How do steep slopes affect flood risk?

• They decrease flood risk by allowing water to infiltrate quickly.

• They increase flood risk by promoting surface runoff.

• They increase flood risk by storing more water.

• They have no effect on flood risk.

Why do low-lying areas have a high flood risk?

• Water can spread out easily but moves out slowly.

• They are made of permeable rock.

• They have a lot of vegetation.

• They have steep slopes.

What type of rock is associated with a higher flood risk due to its impermeability?

• Sandstone

• Slate

• Chalk

• Limestone

Which type of rock allows water to pass through, reducing flood risk?

• Limestone

• Granite

• Clay

• Slate