Across
- 2. Outer layer of the Earth
- 3. Cycle Movement of water through the atmosphere and Earth
- 7. Force that moves water
- 10. Replinished in a short time
- 11. Giant tube in a hydropower plant
- 12. Process of converting solar energy into glucose
- 16. Solar cell
- 18. The Earth's crust is in giant pieces called ___________
- 20. Device that turns motion into electricity
- 22. Gas produced by organic decay
- 25. Dams can control these dangerous events
Down
- 1. Moving water spins the blades of this
- 4. Device that measures wind speed
- 5. Photovoltaic cells convert radiant energy into _________
- 6. A solar ___________ gathers radiant energy and turns it into thermal energy
- 8. Bacteria used to ferment fruits and grains
- 9. Process of making alcohol with yeast
- 13. Element transformed in nuclear fusion in the sun's core
- 14. Geothermal resource good for bathing
- 15. Measure of electricity
- 17. Wind is caused by uneven ____________ of the Earth's surface
- 19. Parts of a wind turbine that capture wind energy
- 21. Liquid alcohol fuel
- 23. Warm air _________
- 24. Center of the Earth