8th Grade

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