Year 9 Science · Unit 3 · Lesson 21
Foundation Worksheet
Learning Goals
Match each technology to its primary energy source
Write the correct letter from the right column next to each technology. Each letter is used once.
| Technology | Your answer | Primary energy source |
|---|---|---|
| Green hydrogen | A. Gravitational potential energy and kinetic energy of ocean water driven by the Moon's gravity | |
| Geothermal energy | B. Nuclear binding energy released when light atomic nuclei combine (fuse) | |
| Tidal energy | C. Renewable electricity (solar or wind) used to split water molecules by electrolysis | |
| Wave energy | D. Heat stored in Earth's crust, produced by radioactive decay deep underground | |
| Fusion energy | E. Kinetic energy of ocean surface waves generated by wind blowing across the water |
True or False? Fix the false ones
Circle T or F for each statement. If the statement is false, rewrite it correctly on the line below.
Nuclear fusion energy is currently used in commercial power stations around the world.
Correct it:
Geothermal energy can only be harvested near active volcanoes, hot dry rock geothermal does not work in places like outback Australia.
Correct it:
Hydrogen is an energy carrier, not a primary energy source, it must be produced using another energy input such as electricity or fossil fuels.
Correct it:
Tidal energy is highly intermittent and unpredictable, just like solar power on a cloudy day.
Correct it:
1. What is the name of the process used to produce green hydrogen, and what two gases does it produce?
2. Geothermal energy from the Cooper Basin in South Australia is described as "hot dry rock" geothermal. Explain what makes this different from geothermal energy near a volcano.
Wrap Up
In one sentence, what was the main idea of this lesson?