1. Physical Science Bell Ringers Fall semester 2011-12

2. October 14, 2011  Explain the difference between mass and weight.  Turn in 5 bell ringers from this week

3. October 13, 2011  Describe gravitational force.

4. October 12, 2011  State Newton’s 1 st and 2 nd Laws.

5. October 11, 2011  How are inertia and mass related, according to Newton’s 1 st law?

6. October 10, 2011  Tell me three things you did over Fall Break. Tell me more than slept and watched T.V.

7. PeriodStartStop 18:259:10 29:159:57 310:0210:44 410:4912:03 512:0812:50 612:551:37 71:422:24 FLEX2:293:00 Tuesday, Thursday

8. September 29 & 30, 2011  No bell ringers as Mrs. Green was at a conference

9. September 28, 2011  Can a penny kill someone if dropped from the top of a skyscraper?  Turn in 3 bell ringers from this week as I will not be here Thursday & Friday

10. September 27, 2011  A truck travels to and from a stone quarry that is located 2.5 km to the east.  What is its distance?  What is its displacement?

11. September 26, 2011  Find the acceleration of a car that goes from 32 m/s to 96 m/s in 8.0 s.

12. September 23, 2011  Explain what happens if 2 objects have the same speed but different velocities.  Turn in 4 bell ringers from this week

13. September 22, 2011  Explain how forces and motion are related.

14. September 21, 2011  No Bell Ringer, Mrs. Green at a conference

15. September 20, 2011  Create a graph showing an object with positive velocity and positive acceleration.  Create another line on your graph to indicate an object with constant velocity.

16. September 19, 2011  Starting from rest, if a car accelerates at 0.90 m/s 2, how fast would be moving after 6.0 seconds? a vv t

17. September 16, 2011  In yesterday’s acceleration lab, when did your car have the fastest acceleration (when on the low or high incline)?  Turn in 5 bell ringers from this week

18. September 15, 2011  During a race, a sprinter increases from 5.0 m/s to 7.5 m/s over a period of 1.25s. What is the sprinter’s average acceleration?

19. September 14, 2011  A dragster in a race accelerated from stop to 40 m/ s by the time it reached the finish line. The dragster moved in a straight line and traveled from the starting line to the finish line in 10.0 sec.  What was the acceleration of the dragster?

20. September 13, 2011  What is the equation to calculate acceleration?

21. September 12, 2011  If a car travels 100 meters in 3.2 seconds, what is the average speed?

22. September 9, 2011  1 st – What is the difference between average speed and average velocity? 4 th & 5 th – The fastest trains are magnetically levitated above the rails to avoid friction. The fastest trains travel about 155 miles in a half an hour.  What is their average speed in miles/hour?  Turn in 4 bell ringers from this week

23. September 8, 2011  1 st = What is the distance and the displacement of the race car drivers in the Indy 500?  4 th & 5 th = What is the difference between average speed and average velocity?

24. September 7, 2011 Check Your Understanding from yesterday  What is the displacement of the cross-country team if they begin at the school, run 10 miles and finish back at the school?

25. September 6, 2011  What is motion?

26. September 2, 2011  No bell ringer, projector broken  Turn in 4 bell ringers from this week

27. September 1, 2011  Draw a bar graph to illustrate the following information about soccer team wins:  YearWINS  20052  20068  20074  20087  20099

28. August 31, 2011  On the graph, what percentage of fuel usage is electric and steam?

29. August 30, 2011  Use the graph in Figure 1-3 to find the number of grams of sugar that will dissolve in 100 grams of water at 80ºC.

30. August 29, 2011  Arrange each of the following in order from largest to smallest.  centimeter  kilometers  meters  micrometers  millimeters

31. August 26, 2011  Convert 1750 ml to liters.  Convert 2 ½ liters to cc's (Cubic centimeters)  Turn in bell ringers from this week  1 st & 4 th = 4  5 th = 3

32. August 25, 2011  Complete the following conversions:  38 cm into meters  459 mL into centiliters  1123 kg in grams Page 879 #1-4, 6-10 Math Problems Kelvin = °C +273 °C = Kelvin - 273 cm 3 = mL

33. August 24, 2011  Convert the following numbers into scientific notation:  348594  0.024094  0.000004595  1025

34. August 23, 2011  No bell ringer, Mrs. Green absent

35. August 22, 2011 How many babies did Dr. Jones deliver in 1998? A. 25 B. 35 C. 45 D. 55 E. 65

36. August 19, 2011  Define precision and accuracy.  Turn in 5 bell ringers from this week

37. August 18, 2011  Name the steps of the scientific method Add to yesterday’s bell ringer, just write the date and the answer. If you were absent yesterday, write yesterday’s date and “absent” then answer today’s bell ringer.

38. August 17, 2011  What does Physical Science cover? Add to yesterday’s bell ringer, just write the date and the answer. If you were absent yesterday, write yesterday’s date and “absent” then answer today’s bell ringer.

39. August 16, 2011  What are the three main branches of science? Add to yesterday’s bell ringer, just write the date and the answer. If you were absent yesterday, get out a piece of paper, put your name on it. Write yesterday’s date and “absent” then answer today’s bell ringer.

40. August 15, 2011  Get out a piece of paper, write today’s date and answer the question below  Hold on to your paper as we will turn them in on Friday once we have a week of bell ringers What is Physical Science?