ROUND 1

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Across
  1. 2. What kind of energy comes from the sun?
  2. 4. What is the process of changing liquid water into water vapor called?
  3. 8. liquid often used as fuel
  4. 9. What force pulls objects down toward the Earth?
  5. 10. study of building machine and structures
  6. 11. What device generates electricity by rotating, often found in bikes?
  7. 14. What type of energy is produced by burning fuels?
Down
  1. 1. machine used in construction to lift heavy objects
  2. 3. What force slows down a ball when it rolls on the ground?
  3. 5. smallest unit of a chemical element
  4. 6. What metal is commonly used to make electrical wires?
  5. 7. What device stores chemical energy to power machines and gadgets?
  6. 8. What simple machine helps in lifting objects using a rope and wheel?
  7. 12. What device changes electrical energy into mechanical energy?
  8. 13. What space has no air