2. Quick Write: Explain the difference between efficiency and inefficiency Efficiency means almost no energy is wasted. Inefficiency means energy is wasted.

3. Which lamp is more efficient? Light Energy Heat Energy Light Energy The white lamp is more efficient because it is NOT wasting energy on heat

4. Adapted by T. Trimpe http://sciencespot.net/http://sciencespot.net/

5. Game Rules and Procedures Each table is 1 team. No changing tables or teams! Each team gets 1 dry erase board, 1 marker and 1 eraser. One person is in charge of writing down answers. Write your team’s number at the top of your dry erase board. NEVER erase it.

6. Scoring System Correct Answer: 1 point Incorrect Answer: no point Arguing with team: lose a point Talking during game: lose a point (don’t accidentally give away your answers!!) Being disruptive: lose a point

7. Don’t Forget... Contestants

8. Although they give answers in the form of questions on the TV show, you do not need to do this. You do need to write your answers on your team’s game board! The winning team gets panther tickets!!

9. Energy which vibrates air molecules

10. sound energy

11. Two types of energy which fuel the human body

12. Light and chemical

13. The kinetic energy of movement

14. Mechanical

15. The kinetic energy of flowing electrons

16. Electrical

17. A system that uses the LEAST amount of energy to get a job done is called…

18. Efficient

19. A change from one form of energy to another

20. Transfer or Transformation

21. A system that wastes the most energy is called…

22. inefficient

23. The potential energy stored in bonds between atoms

24. Chemical

25. Energy of heat

26. thermal

27. Plants use photosynthesis to transform _____________ energy to chemical energy.

28. Light/radiant energy

29. Energy is neither _____________ nor ___________; it gets transformed from one form to another.

30. created /destroyed

31. People use the chemical energy from plants and other animals and convert it to ______________ energy to stay warm and _______________ to move.

32. Thermal energy and mechanical energy

33. Batteries transfer chemical energy to electrical energy. What is another name for energy that has been released?

34. Kinetic energy

35. A lamp plugs into a wall. It draws energy through a wire which makes the bulb turn hot and start to light up. What is the energy transfer?

36. Electrical to Thermal to Light (electrical is the energy moving through the wires, thermal is the bulb heating up, light is the bulb lighting up)

37. For the next question, give me an example of energy transfer. You may NOT use potential to kinetic energy.

38. Plants producing food

39. Light chemical

40. Stored energy

41. Potential or chemical

42. A force on a surface that opposes motion is called…

43. FRICTION

44. Does friction increase or decrease the efficiency of a system?

45. Friction DECREASES efficiency (Friction is a force opposing motion. Motion is released energy. The more friction, the less motion, the less released energy)

46. Light bulb A produces lots of light and lots of heat. Light bulb B produces lots of light and no heat. If the purpose of the light bulb is to produce light only, which bulb is more energy efficient: A or B?

47. Light bulb B (Light bulb A is wasting energy by transforming some of it into heat)

48. How many points do you want to risk?

49. Describe this energy transfer using three forms of energy which are NOT potential or kinetic

50. Chemical to electrical to light/radiant (chemical in the battery, electrical in the wire, light in the light bulb)

51. And the winner is …