Science 7th Grade Review

Edit Answers
1234567891011121314151617181920212223
Across
  1. 2. a type of mixture that you CANNOT tell apart
  2. 6. a type of mixture that you CAN tell apart
  3. 7. meteorologist study the _______________
  4. 10. is the prefix that stands for life
  5. 13. is the prefix that stands for earth/rocks
  6. 16. system that transport oxygen, nutrients, hormones via blood cells
  7. 17. two or more elements combined
  8. 19. smallest unit of matter
  9. 20. sub-particles that have a negative charge
  10. 21. sub-particles that have a neutral charge
  11. 22. system where food is broken down, nutrients are absorbed, and waste is eliminated
  12. 23. sub-particles that have a positive charge
Down
  1. 1. a type of pathogen that CANNOT live without a HOST
  2. 3. was the profession of Alfred Wegener
  3. 4. system that removes liquid and gas waste
  4. 5. smallest living thing
  5. 8. type of boundary where plates collide
  6. 9. prevents the entry of food into the lungs by closing the trachea (windpipe)
  7. 11. system helps different parts of the body communicate with each other
  8. 12. system that protects the body from pathogens
  9. 14. type of plate boundary where plates slide past each other
  10. 15. another word for man made materials
  11. 18. system that exchanges gases like CO2 and O2