1. Physical Science Bell Ringers Fall semester 2011-12

2. What was the average number of babies that Dr. Jones delivered each year from 1995 to 1998? A. 35 B. 40 C. 45 D. 50 E. 55

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

4. If Dr. Jones delivered 85 babies in 1999, how many rattles would represent this number? A. 6 ½ B. 7 C. 7 ½ D. 8 E. 8 ½

5. November 3, 2011  Describe different forms of potential energy.  Turn in 4 bell ringers from the week.  (I won’t be here tomorrow) Turn student release form into the tray.

6. November 2, 2011  Define kinetic energy. Turn student release form into the tray.

7. November 1, 2011  Is the chemical energy stored in food the same as the energy that comes from the Sun or the energy stored in gasoline? Turn student release form into the tray. Get out Ch. 4 Notes – 7 sections

8. October 31, 2011  What makes a rocket fly through the air? Turn student release form into the tray. Get out Ch. 4 Notes – 7 sections

9. October 28, 2011  A 10-kg wagon has a speed of 25 m/s. What is its momentum?  Turn in 5 bell ringers from this week Turn student release form into the tray.

10. October 27, 2011  Two objects that have the same mass are dropped from a tall building. One object is larger and flatter than the other. Explain why the larger, flatter object hits the ground last. Turn student release form into the tray.

11. October 26, 2011  According to Newton's second law of motion, a larger force acting on an object causes a greater ________ of the object

12. October 25, 2011  Which of the following would have the most momentum and therefore cause a softball to move the most? A. Racquetball B. Ping Pong Ball C. Tennis Ball D. Baseball

13.  Softball = 180 g  Baseball = 145 g  Racquetball = 42 g  Tennis ball = 57g

14. October 24, 2011 If 7,650 trucks were sold in 1999, how many total vehicles were sold in 1999? A. 35,000 B. 40,000 C. 45,000 D. 50,000 E. 55,000

15. October 21, 2011  State Newton’s 3 rd law.  Turn in 4 bell ringers from this week

16. October 20, 2011  What is momentum? Turn in unused homework extension passes for 5pts bonus

17. October 19, 2011  No bell ringer, Mrs. Green absent

18. October 18, 2011  Describe projectile motion.  Tomorrow is the last day of the 9 week grading period Turn in unused homework extension passes for 5pts bonus

19. October 18, 2011  Describe projectile motion.  Tomorrow is the last day of the 9 week grading period Agenda:  Turn in 4.1 WKT  Gravity Hands-on Activity (Get in groups of 2-3)  1.3 Graph WKT Turn in unused homework extension passes for 5pts bonus

20. October 17, 2011  Explain the difference between mass and weight.

21. October 14, 2011  What do you think Newton’s 3 rd law is now that you know the first 2?  Turn in 5 bell ringers from this week

22. October 13, 2011  Calculate the net force.  Determine the acceleration of the 5 kg object at the above force.

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

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

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

26. 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

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

28. 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

29. 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?

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

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

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

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

34. 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.

35. 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

36. 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

37. 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?

38. 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?

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

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

41. 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

42. 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?

43. 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?

44. September 6, 2011  What is motion?

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

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

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

48. 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.

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

50. 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

51. 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

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

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

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

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

56. 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.

57. 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.

58. 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.

59. 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?