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