7th Science Vocab Part 1

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Across
  1. 2. an organism that mainly eats animals
  2. 4. a process in which one or more new substances form from one or more other substances
  3. 6. the transfer of energy caused by the circulation of matter due to differences in density
  4. 9. a long-term change in climate patterns on Earth, including changes in average global temperatures and the frequency of severe weather
  5. 12. a green pigment that is important in photosynthesis
  6. 13. a shorthand notation of one, two, or three letters that represent the name of the element
  7. 14. a shorthand notation made up of arrows and chemical formulas for reactants and products that summarizes what happens during a chemical reaction
  8. 18. a molecule used to store energy
  9. 20. the parts of Earth in which organisms are able to live
  10. 21. the variety of organisms on Earth or in a particular habitat or ecosystem
  11. 22. a large area of Earth characterized by certain physical conditions and the living things that are found there
  12. 23. the requirements that must be met for an engineering solution to be successful
  13. 24. a model that describes how carbon-based molecules move among Earth’s ecosystems and atmosphere
  14. 27. the types of elements that make up a substance, as well as the specific ratios of atoms of each kind of element that make it up
  15. 29. able to be broken down into smaller molecules by biological agents, such as bacteria
  16. 31. the mass of a single atom; all atoms of an element have approximately the same atomic mass.
  17. 32. the process of determining the approximate age of a rock, fossil, or event
  18. 33. the hypothesis that the continents slowly drifted to their current positions after having been part of a single, giant landmass that broke apart
  19. 34. a type of test that medical scientists perform to assess a medicine's effectiveness
Down
  1. 1. the material that forms the rigid walls and support for plant cells
  2. 2. the specific way in which the bonds and atoms are arranged within the molecules of a substance
  3. 3. the combined mass of the bodies of organisms, which collectively represents stored energy
  4. 5. the connection between atoms in more complex particles
  5. 7. the process that cells use to release the energy stored in sugars
  6. 8. to change state from a gas to a liquid
  7. 10. a solid structure whose atoms or molecules are arranged in a repeating, three-dimensional pattern
  8. 11. a relationship between two species in which one species benefits and the other is unaffected
  9. 12. a cell structure that uses the sun’s energy to make sugar through the process of photosynthesis
  10. 14. Earth’s hot, dense, innermost rock layer, located below the mantle
  11. 15. an individual particle of an element
  12. 16. an interaction between living things that need the same limited resource
  13. 17. an organism that gets energy and matter by eating or absorbing other organisms as food
  14. 18. the transfer of energy between objects that are touching; causes energy to move from the warmer object to the cooler object
  15. 19. a limitation on the range of possible solutions to a design
  16. 25. the change in state from a gas to a liquid
  17. 26. a material that is made from biomass and releases energy when it is burned
  18. 28. Earth’s thin, cool, and rigid outermost rock layer
  19. 29. the temperature at which a substance changes from a liquid to a gas as thermal energy is added to it
  20. 30. the limitations on an engineering solution