1. b

2. Review:
To investigate how temperature affects seed germination, a student placed 10 radish seeds of the same variety on moist paper in each of 3 petri dishes and placed the dishes in the following environments:
Dish # 1: Refrigerator, 5ºC
Dish # 2: Room Temperature, 20ºC
Dish # 3: Incubator, 37ºC
1. State the problem of this investigation.
2. Which factor is the variable in this investigation?

3. Dish # 1: Refrigerator, 5ºC
Dish # 2: Room Temperature, 20ºC
Dish # 3: Incubator, 37ºC
3. Identify the control group.
4. Which factor is the dependent variable?

4. The driver of a tractor-trailer truck more than 13 feet tall attempted to drive under a 12-foot bridge. The truck was carrying chemicals to spokesman Stephen MacDonald said. The city’s hazardous materials team responded, but no chemicals or fuel ultimately leaked.

6. http://www. learnalberta. ca/content/mesg/html/math6web/index. html

7. Volume The amount of space an object takes up UNITS = L or cm3
1 mL = 1 cm3
Volume

8. 1. Volume of a Solid:
V = L x W x H
How is volume measured?

9. Ex:
L =2 cm, W=1 cm, H=1 cm
V =2cm x 1cm x 1cm
V = 2 cm3

10. Example: V = ?

11. V = L x W x H
2cm x 3cm x 5cm
V = 30 cm3

12. 2. Volume of a liquid: graduated cylinder (mL)

14. Measure at the MENISCUS

15. V =73 mL

16. V = 18 mL

17. 26 mL
5.5 mL
93 mL

18. 23.5 mL

19. V = 9 – 7= 2
V = 2 mL
V1 = 7 mL
V2= 9 mL

20. 3.Volume of irregular solid:
Displacement
V with object - V w/o object

21. Amount of matter in an object
Grams (g)
TRIPLE BEAM BALANCE
Mass

23. Topic: Measurement
Aim: Practice measuring length, volume and mass.
Do Now:
1. Work on Ditto
2. Work on displacement question from yesterday’s notes
HW: Castle Learning (Scientific Method) due Monday

24. 1 cm
1mm

26. 1 cm = 10 millimeters

29. Images created at http://www. standards. dfes. gov

31. Example:
V = 20 –11.5
V = 8.5 mL
V1 =11.5 mL
V2 = 20 mL

32. http://resources. edb. gov
60mL
V = 260mL – 200mL

33. 10 cm
9 cm
8 cm
V = L x W x H
V = 10cm x 8cm x 9cm
V = 720 cm3

35. Topic: Measurement
Aim: Practice measuring length, volume and mass.
Do Now: (Take out Simpsons HW)
Let’s talk about your research!
HW: Castle Learning (Scientific Method) due Monday
***Research due
Wednesday, October 5th.****

40. Mass = 542 gm

41. Mass = 542 gm

42. Where should the riders be?
What is the total mass?
Where should the riders be?
100 g
20 g
10 g
5 g
1 g

43. 172 g

44. Mass = gm

45. Mass = 25.4 gm

46. Mass = 79.4 gm

47. Let’s summarize…
What is the name of the instrument used to measure volume? To measure mass?
What are the units used when measuring the volume of a liquid? Of a solid?
Explain how the volume of a certain amount of liquid is measured.
Explain how the volume of a solid is determined.
Explain how displacement is used to measure the volume of an irregular solid.

48. Review:
1. Which piece of laboratory equipment would be used to obtain the most accurate measure of the volume of a glucose solution?
triple beam balance
graduated cylinder
beaker
metric ruler

49. 2. Which piece of equipment could be used to determine the mass of a frog?
triple beam balance
graduated cylinder
beaker
metric ruler

50. 3. Mass is best defined as the
size of an object
density of an object
amount of matter in an object
weight of an object

51. 4. The amount of space an object takes up is known as its
mass
density
volume
matter

52. 5. The units for the volume of a solid ismL mm L
cm3

53. 6. The basic unit of volume in the metric system is the
kilogram
gallon
liter
mass

54. 7. The basic unit of mass in the metric system is the
kilogram
gallon
liter
meter

55. 8. To measure the volume of an irregular solid, a student can use
a triple beam balance
a beaker
displacement in a graduated cylinder
a thermometer

56. 6. The volume of a liquid is 13. 0 mL
6. The volume of a liquid is 13.0 mL. What must a student do to obtain a volume of 12.5 mL of liquid in the graduated cylinder?
Add 0.5 mL of liquid.
Add 1.5 mL of liquid.
Remove 0.5 mL of liquid.
Remove 1.5 mL of liquid.

57. 5. Which procedure is the most acceptable method for obtaining the accurate weight of a specimen in a laboratory experiment?
Make sure the balance weighs accurately before starting the measurement, and then record the weight for three trials and average the results.
Readjust the balance after weighing the specimen, and then weigh the specimen again.
Have two classmates use different balances to determine the weight of the specimen, and average the values they obtain.
Determine the weight of the specimen using one balance, and then measure the weight again using a different balance.