Year 9 Science · Unit 3 · Lesson 21

Future Energy Technologies

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Learning Goals

Warm Up

Because… chain, the green hydrogen pathway

Fill in the missing effects in each empty box. Each step causes the next one.

Surplus solar electricity is generated in WA's Pilbara region
→
Electricity passes through an electrolyser, splitting water (H₂O)
→
Hydrogen (H₂) is collected and stored or converted to ammonia for transport
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Hydrogen is used in a fuel cell or burned in a turbine at the destination
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Electricity or heat is produced at the point of use
→

Overall outcome:

Your Turn

Real-world context

Geothermal energy from the Cooper Basin in outback South Australia could potentially generate enough electricity to power the entire state of South Australia. Unlike wind and solar, geothermal produces electricity 24 hours a day, 7 days a week. However, Australia has not yet built any commercial-scale geothermal power stations, despite decades of research and significant investment by companies including Geodynamics Ltd in the 2000s.

(a) Describe how a hot dry rock geothermal power station generates electricity. Include what happens underground and how that produces electricity at the surface.

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(b) Give one advantage geothermal energy has over solar power for providing baseload electricity supply.

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(c) Suggest one reason that has slowed the development of geothermal energy in Australia despite its potential.

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Wrap Up

In one sentence, what was the main idea of this lesson?

HSCScience · Year 9 Science · Unit 3 · Lesson 21 · Apply Worksheet