The Past: 8th Grade Science Concepts

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Across
  1. 3. Positively charged subatomic particle of an atom.
  2. 4. _________ changes are changes in matter that can be observed such as color and state of matter.
  3. 7. One of the evidences of a chemical reaction in which a sold forms when two liquids are chemically combined.
  4. 11. __________ beam balance is an equipment used to measure mass.
  5. 12. ________ front A type of air front that brings thunderstorms followed by fair cold weather.
  6. 13. The unit for force
  7. 15. Center of an atom where protons and neutrons are located.
  8. 16. Created by transform boundaries.
  9. 17. Factors in an ecosystem that is nonliving
  10. 19. __________ maps are maps that show elevation through contour lines.
Down
  1. 1. A type of boundary movement where plates move toward each other.
  2. 2. speed in a given direction.
  3. 5. distance covered per unit of time.
  4. 6. Color of stars that are cold and are found on the right side of the HR diagram
  5. 7. Creates their own food and is the source of energy for consumers in a food chain/web.
  6. 8. ________ electrons are found in the last or outermost shell or energy level of an atom.
  7. 9. Factors in an ecosystem that is living
  8. 10. Biggest and brightest of the stars and are found at the top of the HR Diagram
  9. 14. Tendency of objects to resist any change in their motion.
  10. 18. Transfer of heat through fluids.