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What is a big advantage of hydro-electric power?
It can provide an immediate response to an increased demand for electricity.
What environmental impacts can hydro-electric power have?
Flooding of the valley, possible loss of habitat for some species, and reservoirs can look unsightly when they dry up.
Where should hydro-electric power stations be put to reduce their impact on humans?
In remote valleys.
What does hydro-electric power transfer energy from?
The kinetic store of falling water.
What requires the flooding of a valley by building a big dam?
Hydro-electric power.
What is caught and allowed out through turbines in a hydro-electric power system?
Rainwater.
What are the initial costs and running costs for hydro-electric power?
Initial costs are high, but there are no fuel costs and minimal running costs.
When is there no problem with reliability for hydro-electric power?
Except in times of drought.
Where can hydro-electric power be useful to generate electricity?
On a small scale in remote areas.