7th grade Matter and Energy

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Across
  1. 4. any class of organisms that occupy the same position in a food chain, as primary consumers,secondary consumers, and tertiary consumers
  2. 6. a diagram that shows many overlapping food chains
  3. 7. A green pigment (in all green plants) that is responsible for the absorption of light to
  4. 10. the process of enzymes within the body breaking down food into smaller molecules the body can use
  5. 14. the presence of sunlight) to produce glucose and oxygen
  6. 16. an organism that breaks down waste and dead organisms
  7. 17. all of the living and nonliving things that interact within an area
  8. 20. the process of physically breaking food into smaller pieces (i.e. chewing)
  9. 21. a diagram that shows the amount of energy moving from one feeding level to another
  10. 22. energy given off during a transformation (i.e. heat)
  11. 23. an organism that is able to produce its own food through the process of photosynthesis or chemosynthesis
  12. 24. the process by which green plants and some other organisms use water and carbon
  13. 25. to change from one form to another
  14. 26. into another
  15. 28. a series of events in which one organism eats another in order to gain energy
  16. 30. anything that has mass and takes up space
  17. 31. the movement of energy through a food chain in an ecosystem
Down
  1. 1. Energy stored in the bonds of molecules
  2. 2. two or more atoms joined together chemically
  3. 3. the type of change in which the form of matter is altered, but one substance is not
  4. 5. a substance that consists of 2 or more elements combined in a set ratio
  5. 8. energy of light
  6. 9. breaks down food into tiny molecules to allow the body to absorb nutrients
  7. 11. the type of change that results in the formation of new chemical substances
  8. 12. a simple sugar which is an important energy source in living organisms
  9. 13. energy for photosynthesis
  10. 15. an organism that must consume other organisms in order to obtain energy
  11. 18. contains chlorophyll and makes food from sunlight (plant cell only)
  12. 19. the role that an animal or plant species plays with in the environment
  13. 27. an organism that obtains energy from the Sun through the process of photosynthesis
  14. 29. an organism that gains energy by feeding on other organisms