1. 3/31/09 Warm up: Describe 5 forces that act on a basketball when it is shot into a basket.

2. 3/30/09 Warm up: What is the difference between kinetic and potential energy?

3. 3/16/09 Warm up: Why is it important to be knowledgeable about a topic before you begin an experiment? Rewind: Name a topic related to science that you are knowledgeable about. List 5 quick facts about that topic.

4. 3/13/09 Warm up: Do you believe in superstition? Rewind: have you ever changed your behavior because of a superstition?

5. 3/12/09 No warm up today: substitute

6. 3/11/09 Warm up: what job would you like to have when you graduate? Rewind: what kind of training is required to be successful at that job?

7. 3/10/09 Warm up: What is a question that you have always wanted to know the answer to? "He who asks a question is a fool for five minutes; he who does not ask a question remains a fool forever." Chinese Proverbs Rewind: What steps could be taken to find the answer to your warm up question?

9. Warm up 3/6/09 When energy is transferred from one form to another, why can’t all of it be used for doing work? (what causes energy to be wasted?)

10. Warm up 3/6/09 Rewind: If you were to build a machine that transfers chemical energy to mechanical energy name two types of friction that you would try to minimize to reduce wasted energy.

11. Warm up 3/5/09 What did you build for for your project? How did it work? What were some difficulties? Rewind: no rewind today

12. Warm up 3/4/09 On Tuesday, you were assigned 4 science article summaries. Warm up: Write 3 facts from one of the articles/sections that you read. Were you absent Tuesday? Finish them by Wednesday!

13. Rewind 3/4/09 How did the egg drop devices protect the egg? (discuss forces that were involved in the collision)

14. Warm up 3/3/09  Describe how your life has been affected by a microorganism. Rewind 3/3/09  How do you prevent bacterial infections?

15. Warm up 3/2/09  What do you know about bacteria? Rewind 2/26/09  How do you prevent bacterial infections?

16. Warm up 2/27/09 Mr Shown was absent. No warm up today. Rewind 2/26/09  No rewind today

17. Warm up 2/26/09  How can you conserve energy in your daily life? Rewind 2/26/09  Why is it important for people to conserve energy?

18. rewind2/26/09  How can you conserve energy in your daily life?

19. Warm up 2/25/09  How is kinetic energy different from potential energy?

20. Rewind 2/25/09 What were some common sources of error found in experiments?

21. Warm up 2/24/09  What was the changed variable in your experiment?  Which variables stayed constant for all trials?  What were some sources of error in your experiment?

22. Rewind 2/24/09 Which force causes an object to roll downhill? Which forces slow down an object that rolls downhill?

23. Warm up 2/23/09 Explain the forces that were acting on the objects in your experiment.

24. Warm up 2/19/09 What is gravitational potential energy? (see page 448) Answer:The energy an object has stored because of gravity.

25. Rewind 2/19/09 What is elastic potential energy? Answer:energy that can be released when an object stretches.

26. Warm up 2/18/09 What is potential energy? (see page 448) Answer:The energy an object has stored inside.

27. Rewind 2/18/09 How would the potential energy change if you triple the height of an object? Answer:The potential energy will triple.

28. Warm up 2/17/09 What is kinetic energy? (see page 447) Answer: Kinetic energy is the energy of motion.

29. Rewind 2/17/09 How would the kinetic energy change if you triple the speed of an object? Answer: kinetic energy would increase by 9 times

30. Warm up 2/10/09 Describe 1 example of an action-reaction pair of forces.

31. Warm up 2/9/09 How do ball bearings reduce friction in a machine? Ball bearings have rolling friction which is less forceful that sliding friction.

32. Warm up 2/6/09 What is the one variable that your group is changing during your experiment? What are variables that you will keep constant?

33. Warm up 2/5/09 You will need a warm up sheet this week When is the next assignment list (2.3) due? Answer: February 10 th !

34. Warm up 2/3/09 You will need a warm up sheet this week When a car is driving down the road, which kind of friction is taking place between the road and the tires? Which kind of friction is taking place between the air and the car?

35. Warm up 2/2/09 You will need a warm up sheet this week Explain why the “air puck” can slide around so easily. Give one example of something else that could make something roll or slide more easily.

36. Warm up 1/29/09 No warm up sheet needed this week Each group will need to write down their answer on paper and then share. Explain why the “air puck” can slide around so easily. Give one example of something else that could make something roll or slide more easily.

37. Warm up 1/28/09 No warm up sheet needed this week Each group will give 4 examples of their assigned type of friction. 1,2)Static friction (p.359) 3,4) Sliding friction (p.359) 5,6)Rolling friction (p.360) 7,8)Fluid friction (p.360)