Across
- Process used to extract energy from combustible fuels. (4)
- Transforms rotational kinetic energy into electricicity. (9)
- Liquid fuel formed millions of years ago from dead sea creatures. (3)
- Fuel for nuclear power stations. (7)
- Energy from the sun. (5)
- Energy from the moon's gravitational attraction for the oceans. (5)
- Power from the crests and troughs on the sea. (4)
- Solid fuel formed millions of years ago from dead plant matter. (4)
- Spins as water or air flows through it. (7)
- Gas needed to let fuel burn. (6)
- Energy generated from disintegrating atoms. (7)
- Fuel for nuclear power stations. (9)
Down
- Energy source from beneath the earth's surface. (10)
- Renewable energy from harvesting plants for burning. (7)
- Replacable in the short time once it is used. (8)
- ________ electric power from water held behind a dam. (5)
- The energy from the Sun is transferred to the Earth by this process. (9)
- Can catch light. (9)
- Most useful form of energy. (10)
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