Science

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Across
  1. 2. material that allows heat to pass through it easily
  2. 6. a energy source that will never run out
  3. 8. unstable elements that emit radiation
  4. 10. Coal,oil, and natural gas
  5. 11. The radioactive element most widely used as fuel for nuclear reactors
  6. 13. a machine that uses wind power to propel itself and send energy to homes
  7. 14. a barrier built across a river to hold back water
  8. 16. splitting an atom's nucleus to release energy
  9. 17. The natural force pulling water downward to create energy
  10. 19. Measure of the average kinetic energy of particles (how hot or cold something is)
  11. 24. The standard scientific unit of heat energy
  12. 26. The tall base structure that supports the rotor
  13. 27. crude oil
  14. 30. a machine for producing power in which a wheel or rotor is made to revolve by the flow of water, steam, gas, or air
  15. 33. a element found in all organic matter
  16. 35. a structure at the top of the tower that protects the generator
  17. 36. The transfer of thermal energy through direct contact
  18. 38. The increase in volume of a substance as it heats up
  19. 39. A device used to indicate wind direction
  20. 40. a matter that comes from living things
  21. 41. form of energy that causes temperature to rise
Down
  1. 1. a process plants use to trap solar energy
  2. 3. a dense center of an atom, containing protons and neutrons
  3. 4. a gas that contributes to global warming
  4. 5. farts
  5. 7. device that converts mechanical energy into electricity
  6. 9. process of two atomic nuclei joining togethe
  7. 12. material that traps heat and prevents it from passing
  8. 15. The long part of the turbine that captures wind and rotates
  9. 18. Device used to measure temperature
  10. 20. animal waste used to create biogas
  11. 21. Heat transfer through empty space (from the sun to the earth) using waves
  12. 22. The process by which heat is transferred through fluids by movement of the fluid itself
  13. 23. a fossil fuel that is found as a gas, often above oil deposits
  14. 25. natural resource (like Uranium) that cannot be replaced at the rate it is consumed
  15. 28. The energy of motion
  16. 29. a solid fossil fuel formed from ancient plant remains
  17. 31. oldest and most common form of biomass
  18. 32. light that comes from the sun is called ________
  19. 34. rotating hub that holds the blades
  20. 37. a large lake used as a source of water supply