Across
- 3. Energy produced by moving water from rivers or dams.
- 5. Hot vapor that moves turbines in thermoelectric plants.
- 6. Type of energy that will eventually run out, like coal or oil.
Down
- 1. Energy produced by splitting atoms of uranium.
- 2. The contamination of air, water, or soil by harmful substances.
- 4. A black rock used as fuel to produce energy.