Anwer Key: energy, complex machine, electric, simple machine, chemical, work, nuclear, radiant, mechanical, seismic, thermal, sound

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