Science Olympiad Timed Practice

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Across
  1. 2. a plant-like organism that breaks down dead or dying plants
  2. 4. active at night
  3. 6. a path that electricity follows
  4. 13. a group of stars that forms a pattern or picture
  5. 14. an object that can attract iron and produce a magnetic field
  6. 17. an adaptation that allows an animal to blend into its surroundings
  7. 18. the bottom layer of soil, made mostly of solid rock
  8. 20. all dead; no more left alive on Earth
  9. 22. a relationship between tow organisms that helps one or both of the organisms
  10. 23. the property of matter that keeps an object at rest or moving in a straight line
  11. 24. an organism that makes its own food
  12. 26. an instrument for measuring air pressure
  13. 28. a basic unit that measures a force, such as gravity
  14. 30. a part of a cell that stores water and nutrients
  15. 31. a nonliving part of an ecosystem
  16. 33. a basic building block of matter
Down
  1. 1. the amount of water vapor in the air at any given time
  2. 3. the energy of motion
  3. 5. solid waste produced by the body during digestion
  4. 6. the gel-like substance that fills a cell
  5. 7. surface landforms of an area
  6. 8. a common rock-forming mineral with large crystals that can be many different colors
  7. 9. not allowing light to pass through
  8. 10. the addition of harmful materials to the environment
  9. 11. to move from one place to another
  10. 12. something that slows or stops the flow of energy, such as heat, electricity, or sound
  11. 15. an area of land that is drained by a series of creeks and rivers
  12. 16. an opening in Earth's crust through which melted rock, hot gases, rock fragments, and ash reach the surface
  13. 19. a form of matter that has no definite shape or volume
  14. 21. a vascular tissue that conducts water and minerals through a plant
  15. 23. a type of animal that has three main body parts and six legs
  16. 25. the layer of rock that forms the outer surface of Earth
  17. 27. to turn on an axis
  18. 29. another name for a saltwater environment
  19. 32. the smallest unit of life
  20. 34. molten rock that reaches Earth's surface
  21. 35. the molten rock beneath Earth's surface