Processes Of Change At A Local Scale - Water

Question 1

How do seasonal changes affect the water cycle

Answer 1

In winter snowfall and frozen ground interrupt water transfers and affect magnitude of stores

Question 2

What happens if precipitation is heavy (local scale)

Answer 2

The amount of water reaching the ground increases and magnitude of stores increases

Question 3

Effect of deforestation (local scale)

Answer 3

Reduces interception and infiltration resulting in an increase in overland flow

Question 4

Effect of urbanisation (local scale)

Answer 4

Impermeable surfaces reduce infiltration, water will flow quickly through drainage pipes to nearby river channels

Question 5

What is an influential process operating in the hillslope water cycle

Answer 5

Infiltration- the movement of water from the ground surface into the soil

Question 6

What is the soil water budget

Answer 6

The changes in the soil water store during the course of a year

Question 7

What are the 5 key terms of soil water budget

Answer 7

1. Soil moisture surplus - the soil water store is full= surplus of soil moisture for play use and runoff into streams (precipitation > potential evaporation(PE))
2. Soil moisture use- plants Rey on stored water which is gradually used up ( PE> precipitation)
3. Soil moisture deficiency- plants must have adaptions to survive for long periods
4. Soil moisture recharge- soil water starts to be recharged (precipitation> PE)
5. Field capacity has been reached- soil water store is full