Renewables

• What type of energy does solar power generate?

  Electricity directly from sunlight
• What is a characteristic of renewable energy sources?

  They produce no pollution when in use
• What is geothermal power derived from?

  Hot rocks underground
• How do geothermal heat pumps function?

  They heat buildings using underground heat
• What is hydro-electric power?

  Power generated from big dams
• What happens to water in hydro-electric power systems?

  Water is allowed out through turbines
• What is a disadvantage of hydro-electric power?

  Rotting plants release methane and CO2
• What is wave power?

  Power generated from ocean waves
• How is electricity generated in wave power systems?

  Waves move turbines to generate electricity
• What is a disadvantage of wave power?

  It can disturb habitats of sea animals
• Why is wave power considered unreliable?

  Waves depend on wind conditions
• What is a common feature of renewable energy sources mentioned?

  They produce no pollution when in use
• What is the impact of tidal power on the environment?

  It produces no pollution when in use
• What is a reliability issue with hydro-electric power?

  It is unreliable during times of drought
• What do solar water heaters use to heat water?

  The sun
• What is a potential environmental concern with geothermal energy?

  It can cause environmental damage
• What is tidal power?

  Power generated from tidal movements