Hydro-electricity

• What does hydro-electric power use?

  falling water
• What does hydro-electric power require?

  The flooding of a valley by building a big dam. Water is allowed out through turbines.
• What is an advantage of hydro-electricity?

  no pollution
• What impact does the flooding of the valley cause?

  rotting vegetation - releases methane & co2

  possible loss of habitat/whole villages
• What is a big advantage of hydro-electricity?

  can provide an immediate response to an increased demand of electricity.
• How can hydro-electricity be useful?

  it can generate electricity on a small scale in remote areas.
• What is an advantage of hydro-electricity relating to costs?

  although initial costs are high, there are no fuel costs & minimal running costs.