How much do you know about Energy?

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Across
  1. 4. Proton particles produce what type of charge of electrical energy?
  2. 7. Heat energy can be transferred through convection, conduction and what?
  3. 10. Renewable energy is generated from what type of sources?
  4. 11. True or False? Nuclear, chemical and heat are all forms of energy.
  5. 12. Finish this sentence; energy can only be transferred and never destroyed or _______
Down
  1. 1. True or False? Sound energy can travel through space.
  2. 2. What is the form of energy called that is stored in a stationary object?
  3. 3. Windmills transfer wind energy to what?
  4. 5. Type of energy that is associated with movement.
  5. 6. What is earth's main source of energy?
  6. 8. Kinetic energy is measured in what?
  7. 9. Sound energy travels along what?