Science Extra Credit

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Across
  1. 4. spacecraft designed to land on a planet’s surface
  2. 7. a system that removes waste from the body
  3. 9. resistant to sickness
  4. 14. this has no volume and adjusts to its container
  5. 17. large air mass with strong winds and rain
  6. 18. Square illustrates how offspring might be
  7. 19. muscles that move at command
  8. 22. similar cells working together to perform a function
  9. 23. an object orbiting another
  10. 25. the lowest layer of the atmosphere at 11 miles high
  11. 26. organ systems working together
  12. 29. dust, pollen, salt, and smoke are all __________
  13. 32. a protein that attacks specific foreign material
  14. 33. this is the second lowest layer of the atmosphere at 31 miles high
  15. 35. the ability to keep internal conditions stable
  16. 38. the amount of matter in a area
  17. 40. this has a volume and structure
  18. 41. Plates the dozen or so plates that make up the surface of the Earth
  19. 42. a system that carries nutrients throughout the body
  20. 43. a system that breaks down food, absorbs nutrients, and processes waste
  21. 44. a system that supports the body
  22. 45. groups of different tissues working together
  23. 46. a small dose of weakened pathogens that makes you immune to a disease
  24. 48. harmful materials added to the environment
  25. 49. any complete round or series of occurrences that repeats or is repeated
  26. 50. weather patterns over a long period of time
  27. 51. a system that instructs the body accordingly
Down
  1. 1. System groups of organs working together to meet the bodies needs
  2. 2. basic unit of organisms
  3. 3. takes blood away from heart
  4. 5. spacecraft the collects data from planet as it drops through the atmosphere
  5. 6. oxygen and materials are exchanged in the _____
  6. 8. the actual characteristics of an organism
  7. 10. the transfer of energy through the air or the water
  8. 11. Small funnel made from the meeting of two air masses
  9. 12. a celestial body moving in the sky, as distinguished from a fixed star
  10. 13. the highest and thickest layer of the atmosphere with the exosphere and the ionosphere
  11. 15. layers of gases protecting the earth
  12. 16. the genetic constitution of an organism
  13. 20. substance that the body uses to move, grow, and maintain homeostasis
  14. 21. the conditions of wind and temperature
  15. 24. this has a certain volume but adjusts its container
  16. 27. wavelike muscle contractions that move food through the body
  17. 28. a system that gets oxygen and releases carbon dioxide
  18. 30. muscles that move without a thought
  19. 31. the height of anything above a given planetary reference plane (like above sea level)
  20. 34. this is the third lowest layer of the atmosphere at 50 miles high
  21. 36. spacecraft passes planets without orbiting
  22. 37. Respiration process where cells use oxygen to release energy stored as sugars
  23. 39. energy that travels across distances as certain types of waves
  24. 42. the transfer of energy through direct contact
  25. 46. takes blood to the heart
  26. 47. a system that allows movement