Introduction and Vocabulary

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Across
  1. 3. the push and pull of an object
  2. 5. having a hole or empty space inside
  3. 8. follow the usual pattern
  4. 9. the ability to do work
  5. 10. energy is transferred by direct contact
  6. 12. to give out something
  7. 13. become or make larger
Down
  1. 1. having tiny pores that allow fluids or gases to pass through
  2. 2. energy is transferred by the mass motion of molecules
  3. 4. energy is transferred by electromagnetic radiation
  4. 6. caused something to exist
  5. 7. damaged the existence of something
  6. 11. do not follow the usual pattern