Science Crossword

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Across
  1. 2. how much matter is in an object
  2. 3. where two plates are moving apart
  3. 4. group of organisms of the same species
  4. 7. all the populations living in one area
  5. 9. is an object that attracts the metals
  6. 11. they are negatively charged particles in an atom
  7. 12. organisms working to maintain a steady-state
  8. 13. the outer part of the earth
  9. 14. speed of an object
Down
  1. 1. the place where organisms live
  2. 5. are positively charged particles in an atom
  3. 6. a rock formation being broken by a fault/faults
  4. 7. creates a force, accounts for electric transfers
  5. 8. the largest layer of the earth
  6. 10. organisms with nonliving surroundings
  7. 12. the transfer of thermal energy from hot to cold