answer key: energy, electric, chemical, nuclear, mechanical, thermal, sound, seismic, radiant, simple machine, work, complex machine

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Across
  1. 5. two or more simple machines working together
  2. 8. energy carried by sound waves
  3. 10. energy carried by an electric current
  4. 12. the ability to cause change
Down
  1. 1. energy stored in and released from the nucleas of an atom
  2. 2. the sum of kinetic and potential and kinetic of the particales that make up an object
  3. 3. energy stored in and released from the bonds between atoms
  4. 4. a machine that does work using one movement
  5. 6. the sum of the potential and kinetic energy in a system
  6. 7. the amount of energy used as a force moves an object over a distance
  7. 9. the energy transferred by waves moving through the ground
  8. 11. energy carried by an electromagnetic wave