Name: __________________________________________ Period: _____ Date: _________

Dekalb Reads Assignment 9.3 B

What is Energy

Read pages 300-305 and answer the following questions
  1. Define kinetic energy.
  2. Kinetic Energy depends on _________________ and ________________.
  3. A falling apple can do more work than a falling cherry. Why?
  4. Write down the kinetic energy equation.
  5. Look at the graph in figure 9-12.

    6. a: on which axis KE is plotted in the graph?

    b: on which axis speed is plotted in the graph?

  6. KE depends on ________________ more than _______________.
  7. If the speed increases 4 times, how many times does the KE increase?
  8. Why car crashes are much more dangerous at speeds above the speed limit?
  9. Write down the modified equation to calculate velocity if KE and mass is given.
  10. Write down the modified equation to calculate mass if KE and velocity is given.
  11. Define mechanical energy?
  12. What is non mechanical energy?
  13. Atoms and molecules have ______________ energy.
  14. Why do atoms and molecules possess kinetic energy?
  15. KE is transferred between particles through _____________________,
  16. When does the KE of particles increase and decrease?
  17. In which part of the horseshoe the atoms vibrate more rapidly.
  18. Why do the atoms in hotter part of horseshoe have greater KE.
  19. What kind of energy do chemical reactions involve?
  20. What happens in a chemical reaction?
  21. Where do the living things get energy from?
  22. In what form do you get energy?
  23. What do eat when you eat a meal?
  24. Where do the plants and algae derive the energy from?
  25. What do the plants do in photosynthesis?
  26. Where is the energy, in the plants, stored?
  27. How are organic molecules broken down?
  28. The sun’s energy comes from ______________________.
  29. Name the process used in nuclear power plant.
  30. What happens to mass during nuclear reaction?
  31. Electricity results from ________________.
  32. Moving electrons can also create __________________,
  33. In what form does the light energy travel?
  34. Light toward the _____________ end of the spectrum carries more energy.
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