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Geothermal Power

Geothermal Power. 30 August, 2014. Keywords Geo, thermal, crust, steam vent, geyser, magma, molten, radioactive, turbine, generator. HW – in planner please Question Sheet has been emailed to you. Please complete for next Friday 18th. All students should be able to:

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Geothermal Power

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  1. Geothermal Power 30 August, 2014 Keywords Geo, thermal, crust, steam vent, geyser, magma, molten, radioactive, turbine, generator. HW – in planner please Question Sheet has been emailed to you. Please complete for next Friday 18th

  2. All students should be able to: Use keywords to draw a labeled diagram that helps describe how electricity can be produced from geothermal energy in the crust. Most students should be able to: Describe the advantages and disadvantages of geothermal energy. Some students should be able to: Use their understanding to evaluate the pros and cons of building a geothermal power plant in a specific place. Outcomes

  3. Watch the clip: http://www.youtube.com/watch?v=W-daow-LojM&feature=related Think – Pair - Share Describe what is happening. Explain why you think this is happening – come up with a theory. Starter – What causes Geysers?

  4. Watch: Geothermal Power clip here

  5. Pros and cons of geothermal energy Extension: For each one explain why it is a good or bad thing.

  6. Should Africa Use Geothermal Energy? • TASK: Make an information leaflet to explain Geothermal Power stations to worried local people • Copy the diagram of a Geothermal power station from figure 5 on page 271 onto the blank piece of paper and explain how it produces electricity (it will be part of your leaflet). • Use the Keywords below to explain what Geothermalenergy is and howElectricity can be produced from it: • In your explanation you should explain the meaning of the termGeothermal. • Where the energy comes from. • How we tap into this energy. • And how we transform it into electricity. • Answer all of the questions in the speech bubbles • Extension: describe the energy transfers/ transformations involved in the process. You have 15 Minutes! Electricity Turbine Magma Earth Heat Rocks Steam Generator Radioactive

  7. Have you completed: A labeled diagram of a geothermal power station? A description of how electricity can be produced from geothermal energy? Can you: Give examples of advantages and disadvantages of geothermal energy? Did you: Answer all the questions from the speech bubbles and explained energy transformations? Self assessment – grade and comment D C B A/A*

  8. Should Africa Use Geothermal Energy? • TASK: Make an information leaflet to explain Geothermal Power stations to worried local people • Copy the diagram of a Geothermal power station from figure 5 on page 271 onto the blank piece of paper and explain how it produces electricity (it will be part of your leaflet). • Use the Keywords below to explain what Geothermalenergy is and howElectricity can be produced from it: • In your explanation you should explain the meaning of the termGeothermal. • Where the energy comes from. • How we tap into this energy. • And how we transform it into electricity. • Answer all of the questions in the speech bubbles • Extension: describe the energy transfers/ transformations involved in the process. You have 15 Minutes! Electricity Turbine Magma Earth Heat Rocks Steam Generator Radioactive

  9. 1) This is the kind of thing I expect: Geo means ……………………. Thermal means ……………. This thermal energy comes from the decay of ………….. elements, such as uranium, in ................ under the ground. The heat released warms the surrounding ……… and can turn nearby water into …………. Steam turns a ………… which drives a …………… that produces …………. Geothermal Electricity Turbine Magma Earth Heat Rocks Steam Generator Radioactive Hot Rocks – Heat energy Water to Steam – Heat energy Steam to turbine – Kinetic energy Turbine to Generator – Kinetic energy Generator – Electrical energy

  10. Will it be dangerous? It shouldn’t be – no more dangerous than the active volcano nearby. That could erupt at any time. But you obviously have to keep the steam you bring up under control. How will it benefit my family? The drilling, and making the power station, are expensive. But then the steam that powers the generators is free. So the electricity will be cheap. It may also provide jobs. Will it pollute the atmosphere? No: the main gas produced is steam. Will the supply be reliable? Very reliable – the hot rock is always there. The water is recycled, so we won’t have power cuts every time there’s a drought. Will it affect wildlife? It’s unlikely to affect wildlife because the power station is quite small. The animals won’t take any notice of it. Will it put off tourists who come here on Safari? Possibly – but the power station will only take up a small area, so we don’t need to worry about them spoiling the view. Possible Answers

  11. Self assessment – grade and comment • Example of what you will write: • Grade: A • What Went Well • I drew a neat diagram of a geothermal power station and labelled it correctly. • I described how electricity is made. • I know examples of the advantages and disadvantages • I answered most of the questions correctly. • Even Better If • I could have got an A* by thinking how the power station will effect wildlife and tourism in the area.

  12. Have you completed: A labeled diagram of a geothermal power station? A description of how electricity can be produced from geothermal energy? Can you: Give examples of advantages and disadvantages of geothermal energy? Did you: Answer all the questions from the speech bubbles and explained energy transformations? Self assessment – grade and comment D C B A/A* Write a Comment: WWW and EBI

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