Gr.5 NST Key words

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Across
  1. 1. a material that quickly returns to its original shape after being bent or stretched
  2. 3. fossils preserved signs of animals such as footprints
  3. 6. the path of one object in space around another
  4. 7. energy that is stored in something
  5. 12. is the center
  6. 13. dark material in the soil that consists of the decaying remains of plants and animals
  7. 15. controls the flow of electricity in a circuit
  8. 16. is the squeezing of the parts of something
  9. 17. an imaginary line that passes through the center of an object
  10. 19. cell changes the energy in chemicals to electricity
  11. 20. fossils hard parts of the body that form fossils
  12. 21. when all the individuals of a type of plant or animal become extinct and nothing is left
Down
  1. 1. the spinning motion of an object, such as the movement of the Earth around its own
  2. 2. a source of stored energy
  3. 4. is the system that turns with the wheels
  4. 5. is a substance that we can eat or burn to get energy
  5. 8. energy that we get out of a system
  6. 9. energy that is added to a system to make it work
  7. 10. the remains or signs of ancient plants and animals preserved in rock
  8. 11. two or more parts that work together to perform a function
  9. 14. an instrument that makes small things look much larger
  10. 18. the movement of an object in space around another