8 December, 2014

How do changes in how water moves through the hydrological

cycle affect the risk of flooding?

Starter: Without looking back at your notes, write down as many parts

of the Hydrological Cycle as possible.

Those who missed last week – grab a revision sheet from me.

Pass Remember the key terms of the hydrological cycle and use them to explain flood risk.

Higher Able to suggest reasons why the River Adur floods and apply your knowledge to an unknown river with a basic answer.

Star Able to apply your knowledge of the hydrological cycle to an unknown river with a developedanswer.

• Precipitation

• Groundwater Flow

• Groundwater

• Soil Moisture

• Evaporation

• River Flow

• Surface Runoff

• Interception

• Transpiration

• Infiltration

• Throughflow

• Percolation

Hydrological cycle Pictionary

• Teams of 3.

• One person comes to me for a term.

• Return to team and draw.

Keywords check

• What is………….

1. Percolation?2. Groundwater flow?3. Throughflow?4. Surface run-off?5. Transpiration?6. Evaporation?7. Condensation?8. Infiltration?9. Channel flow?10. Saturated?

• Answers:

1. Water soaking into bedrock2. Water flowing through bedrock 3. Water flowing through soils4. Water flowing over soil (doesn’t soak in)5. Water ‘breathed out’ by plants6. Water liquid turning into vapour7. Water cooling and returning to liquid8. Water soaking in to soils9. Water flowing in a river/stream10. When soil/rock is full of water and no more

can infiltrate

Big Picture

How water flows around a river system and affects flooding.

The main features of a drainage basin.

A case study of flooding.

A case study of how a river is managed.

Other than extreme flooding, suggest one reason why the River

Adur floods. (3)

Use the hydrological cycle to list as many reasons as possible

(there are 5)

River Adur is a main case study – features,

flooding, management.

What factors affect the flow of water through the hydrological cycle?

How to write an extended answer.

so thatmeans

that

How

hydrological

cycle is

affected

FactorResult on

flooding

so thatmeans

that

Land-use

Weather

Ge

olo

gyR

elie

f

What factors affect the flow of water through the hydrological cycle?

so thatmeans thatHow hydrological cycle

is affectedFactor Result on flooding

On your sheet:

1. Select a Pass or Higher list of factors

2. Sort each factor into the correct part of

the diagram.

3. Create a ‘means that’ ‘so that’

explanation.

Other than extreme flooding, suggest one reason why the River

Adur floods. (3)

Use the hydrological cycle to list as many reasons as possible

(there are 5)

River Adur is a main case study – features,

flooding, management.

Exam question

Interception Infiltration Surface Runoff

Ground water flow Percolation Transpiration

Pass Higher

Trees are cut down Deforestation

Rock that does not let

water soak in

Impermeable rock such

as granite

Rock that lets water soak

in to it

Permeable rock such as

limestone

Hills are steep Frozen ground

Hills are not very steep Saturated ground

Lots of towns and cities Steep ground

Farmland Urban land use

Soil that lets water soak

in to it, such as sandy

loam

Impermeable soil such

as clay

Soil that doesn’t let water

soak in to it, such as clay

Permeable soil such as

sandy loam

Frozen ground Shallow relief