8th Grade

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Across
  1. 2. anything that has mass and takes up space
  2. 6. the ability to make things move or change
  3. 8. a moon phase that looks like a full circle from Earth (two words, no spaces)
  4. 11. to pull objects toward one another
  5. 13. the number of individuals with each trait in a population
  6. 14. a rocky sphere that travels around a planet
  7. 15. a push or a pull that can change the motion of an object
  8. 17. the amount of matter that makes up an object
  9. 19. a random change to a gene that sometimes results in a new trait
  10. 20. a self-contained unit on an aircraft, spacecraft, vehicle, or vessel that can be detached for a particular function
  11. 24. a moon phase that looks like less than half a circle from Earth (two words, no spaces)
  12. 28. something that connects opposite magnetic poles and represents the strength and direction of the field (three words, no spaces)
  13. 29. a machine that can convert kinetic energy into electrical energy
  14. 31. one of the two opposite ends of a magnet (two words, no spaces)
  15. 32. a set of interacting parts forming a complex whole
  16. 33. to shine light on an object and make it visible
  17. 36. a push or a pull that can change the motion of an object
  18. 37. the star that is the main source of light at the center of our solar system
  19. 38. a type of molecule that performs important functions inside organisms (two words, no spaces)
  20. 39. having died out completely and no longer alive anywhere on Earth
  21. 42. the sun, the planets that orbit the sun, and other objects that orbit the sun (two words, no spaces)
  22. 43. a moon phase in which the Moon is not visible from Earth (two words, no spaces)
  23. 44. the border between light and dark on the Moon
  24. 45. everything (living and nonliving) that surrounds an organism
  25. 46. a way of hiding by looking the same as the background
  26. 47. any difference in traits between individual organisms
  27. 48. the energy that an object has because it is moving (two words, no spaces)
  28. 49. an instruction for making a protein molecule
  29. 50. the nearly circular path a smaller object travels around a larger object
Down
  1. 1. a moon phase that looks like a half-circle from Earth (two words, no spaces)
  2. 3. the ability to make things move or change
  3. 4. to move from one object to another or one place to another
  4. 5. a group of individuals born and living at about the same time
  5. 6. to apply a force
  6. 7. the energy that is stored in an object or system (two words, no spaces)
  7. 9. a type of molecule that genes and chromosomes are made of (two words, no spaces)
  8. 10. the space around a magnet in which magnetic forces can act on objects (two words, no spaces)
  9. 12. a longer piece of DNA that contains many genes
  10. 16. a force between an object and the surface it is moving over
  11. 18. how fast an object is moving, or distance over time
  12. 21. a characteristic that all members of a species have
  13. 22. a type of magnet in which the magnetic field is produced by an electric current
  14. 23. speed in a particular direction
  15. 25. the moment when two objects hit each other
  16. 26. the amount of time it takes for a planet to complete one orbit around a star or stars
  17. 27. to push objects away from each other
  18. 30. a moon phase that looks like more than half a circle from Earth (two words, no spaces)
  19. 34. when the Moon is completely dark (two words, no spaces)
  20. 35. when a huge number of species on Earth die out completely around the same time (two words, no spaces)
  21. 40. a group of the same type of organism living in the same area
  22. 41. a related organism from a previous generation
  23. 46. to change from one type of energy to another