science

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Across
  1. 4. energy is transfers in direct contact
  2. 7. a sample of matter held and acquris a uniform
  3. 8. energy transfers through waves
  4. 9. mass of a unit volume of a material substance
  5. 11. stored
  6. 13. made of neutrons and electrons
  7. 17. motion
  8. 18. any subatanse that has mass
  9. 19. systems research, or, simply, systems, is an interdisciplinary field concerned with understanding
Down
  1. 1. a sample of matter the conforms to a shape
  2. 2. energy transfer through liquid and gas
  3. 3. energy
  4. 5. a sudstanse which dose not allow heat or sound throw
  5. 6. The conversion of one form of energy into another, or the movement of energy from one place to another.
  6. 10. extremely tiny piece of matter,
  7. 12. the avergy KE of atoms and molaculs
  8. 14. energy conducted
  9. 15. the transfer of kinetic energy
  10. 16. work
  11. 20. a state of matter