Outline one way in which solar energy drives the hydrological cycle.
Absorption of solar energy causes heating and so evaporation
Name the processes by which water, falling onto the ground as rain, may reach the sea.
- It may reach the ground but can also reach other reservoirs such as Ice and snow, rivers or lakes and directly go to the sea running off at the surface
- Infiltration
- Percolation
- Interception
- Groundwater flow
State factors which affect the sitting of a reservoir
- topography
- geology
- catchment area
- water supply
- existing land use
- pollution risk
- sédimentation
- infrastructure
Outline 2 advantages of using an aquifer for water supply rather than using reservoir
- Aquifers cause fewer conflicts and also cost less as there is no dam construction involved
- Water in aquifer is naturally filtered so less processes are needed to purify it
The over-exploitation of an aquifer may lead to its depletion. Describe one way in which the amount of water supply by an aquifer can be increased
In periods of high river flow for example, water can be taken from a river and pumped in aquifers.
Which source of water is most likely to be saline?
- upland reservoir water - groundwater - lowland river water
Groundwater
Which source of water is most likely to be contamined with pesticides
- upland reservoir water - groundwater - lowland river water
Lowland river
Which source of water is least likely to have a high calcium content?
- upland reservoir water - groundwater - lowland river water
Lowland river water
Which source of water is most likely to contain E-coli?
- upland reservoir water - groundwater - lowland river water
Lowland river water
Which source of water is least likely to have a low dissolved oxygen?
- upland reservoir water - groundwater - lowland river water
Upland reservoir water
Which source of water is least likely to be turbid?
- upland reservoir water - groundwater - lowland river water
Groundwater
