unit vocab 2

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Across
  1. 5. a material like metal witch lets heat or electricity travel through it easily
  2. 8. the movement of one object to anouther
  3. 12. arule that can not be created or destroyed
  4. 13. a small space built of bridges or sidewalks
  5. 14. the motion of atoms and molecules
Down
  1. 1. the point where to objects tough eachother
  2. 2. the energy of moving partials inside matter
  3. 3. when matter increases in size
  4. 4. when matter decreases in size
  5. 6. the oppsit of conductor
  6. 7. how well a surface bounces back heat or light
  7. 9. a material use to prevent heat from escapeing or entering
  8. 10. the charteristics of matter
  9. 11. the process of heat moving through direct contactc