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Lecture Starts: 32:50

Measurement and Units, Part 1

 

Lecture: CModule01-1w

 

http://redwagontutorials.com/HandoutsC/Module01/1stOverhead01.htm

 

http://redwagontutorials.com/HandoutsC/Module01/2ndOverhead.htm

 

http://redwagontutorials.com/HandoutsC/Module01/3rdOverhead.htm

 

http://rwt.apologia.com 

 

http://redwagontutorials.com/HandoutsC/Module01/Module1QP.htm

 

http://redwagontutorials.com/SampleInformalReport.htm

 

http://redwagontutorials.com/FormLabC.htm

 

1.  Chemistry is the study of what unique part of Creation?

 

Chemistry is the study of matter.

 

http://www.mtsd.k12.nj.us/645912592895610/site/default.asp

 

2.  By definition, matter is anything that has _______________ and takes up _______________.

 

By definition, matter is anything that has mass and takes up space.

 

http://en.wikipedia.org/wiki/Matter

 

3.  T or F:  The word “mass” and the word “weight” mean exactly the same thing.

 

False:  The word “mass” and the word “weight” do not mean exactly the same thing.  Mass measures how much matter exists in an object.  Weight measures how hard gravity pulls on that object.

 

http://en.wikipedia.org/wiki/Mass_versus_weight

 

4.  Which of the following has no mass and takes up no space?

 

a.  water

b.  air

c.  light

d.  Mr. Rosenoff

 

Light has no mass and takes up no space.  It is pure energy; therefore, it is not considered matter.

 

http://en.wikipedia.org/wiki/File:Cloud_in_the_sunlight.jpg

 

http://redwagontutorials.com/HandoutsC/Module01/Experiment1.1.htm

 

http://redwagontutorials.com/HandoutsC/Module01/Experiment1.2.htm

 

5.  All matter behaves according to a few fundamental what?

 

All matter behaves according to a few fundamental laws.  Scientific laws are not chiseled in stone.  Scientific laws are based on data and, if that data changes, then even a scientific law is open to revision.  That is why science can’t “prove” anything.  The best that science can do is support an idea, theory, or law with data.  Example: gravity.

 

http://en.wikipedia.org/wiki/Mass

 

http://wilstar.com/theories.htm

 

6.  When making measurements, the _______________ used are as important as the numbers obtained.

 

When making measurements, the units used are as important as the numbers obtained.

 

http://www.conweb.com/tblefile/conver.shtml

 

7.  T or F:  If you answer a question or a problem and do not list the units with the numbers, your answer will be marked wrong.

 

True:  If you answer a question or a problem and do not list the units with the numbers, your answer will be marked wrong.

 

http://marsprogram.jpl.nasa.gov/msp98/orbiter/

 

8.  Which of the following is the standard set of units used by scientists?

 

a.  the metric system

b.  the English system

c.  the Roman system

d.  the German system

 

The metric system provides the standard set of units used by scientists.

 

http://lamar.colostate.edu/~hillger/common.html

 

9.  In the metric system, the unit for mass is the what?

 

In the metric system, the unit for mass is the gram.  The English unit for mass is the slug.  (Remember: Mass measures how much matter exists in an object.  Weight measures how hard gravity pulls on that object.)

 

http://en.wikipedia.org/wiki/Slug

 

http://hyperphysics.phy-astr.gsu.edu/hbase/mechanics/slug.html

 

10.  The English unit for weight is the _______________; whereas, the metric unit for weight is the _______________.

 

The English unit for weight is the pounds; whereas, the metric unit for weight is the Newton.

 

http://hyperphysics.phy-astr.gsu.edu/hbase/mass.html

 

11.  The English unit for distance is which of the following?

 

a.  the mile

b.  the meter

c.  the yard

d.  the foot

 

The English unit for distance is foot; the metric unit for distance is the meter.

 

12.  T or F:  The unit for time in both the metric and English system is the minute.

 

False:  The unit for time in both the metric and English system is the second.

 

http://en.wikipedia.org/wiki/Atomic_clock

 

13.  Which would be a better buy for $3.00: one liter of gasoline or one gallon of gasoline?

 

The standard unit of volume in the metric system is the liter.  It takes just under four liters to make one English gallon.  If you paid $3.00 per liter, you would be paying approximately $12.00 per gallon for the gas.

 

http://www.nationmaster.com/graph/ene_gas_pri-energy-gasoline-prices

 

(Note:  You should know Table 1.1 and be ready for a quiz covering it in the near future.)

 

http://redwagontutorials.com/HandoutsC/Module01/Table1.1.htm

 

14.  The prefix units of the metric system mean the same thing regardless of the _______________  _______________ being measured?

 

The prefix units of the metric system mean the same thing regardless of the physical quantity being measured.

 

15.  Which of the following has a numerical meaning of 0.001?

 

a.  micro  (u)

b.  milli    (m)

c.  centi   (c)

d.  kilo     (k)

 

Milli (m) has a numerical meaning of 0.001.

 

16.  T or F:  100 liters of soda pop could also be called 1 hectaliter (HL).

 

True:  100 liters of soda pop could also be called 1 hectaliter (HL).

 

http://en.wikipedia.org/wiki/File:Coke_003.jpg

 

(Note:  You should know Table 1.2 and be ready for a quiz covering it in the near future.  I expect you to know ALL of the numerical meanings, not just three.)

 

http://redwagontutorials.com/HandoutsC/Module01/Table1.2.htm

 

17.  A chemistry student measures the mass of a beaker as 1581 g.  What is the beaker's mass in kg?

 

http://en.wikipedia.org/wiki/File:Beakers.jpg

 

http://redwagontutorials.com/HandoutsC/Module01/BlankPage.htm

 

Answer:

 

1581 g  x     1 kg    =   1.581 kg

    1          1000 g

 

18.  If a carton of orange juice contains 0.521 L of juice, what is the volume of juice in deciliters?

 

http://en.wikipedia.org/wiki/File:Orange_juice_1_edit1.jpg

 

Answer:

 

0.521 L  x     10 dL    =   5.21 dL

    1               1 L

 

19.  On a professional football field, the distance from mid field to the goal line is 4,572 cm.  What is the distance from mid field to goal line in millimeters?

 

http://en.wikipedia.org/wiki/File:QwestFieldPano.jpg

 

Answer:

 

4,572 cm  x     10 mm    =   45,720 mm

    1                 1 cm

 

(Note:  You should know Table 1.3 and be ready for a quiz covering it in the near future.)

 

http://redwagontutorials.com/HandoutsC/Module01/Table1.3.htm

 

20.  On a professional football field, the distance from mid field to the goal line is 4,572 cm.  What is the distance from mid field to goal line in inches?

 

Answer:

 

4,572 cm  x     1 inch    =   1,800 inches

      1            2.54 cm

 

21.  What is the mass in kilograms of 77 slugs?

 

Answer:

 

77 slugs  x   14.59 kg  =   1,123.43 kg

    1               1 slug

 

22.  An Olympic-size swimming pool holds 660,000 gallons of water.  How many liters does the typical Olympic-size swimming pool hold?

 

http://www.showchina.org/en/Gallery/Sports/200801/t145875.htm

 

Answer:

 

660,000 gallons  x      3.78 L   =   2,494,800 L

           1                  1 gallon

 

23.  A bucket is filled with 50,000 cL of water.  How many kL of water are there in the bucket?

 

Answer:

 

50,000 cL  x   0.01 L  x    1 kL   =   0.5 kL

    1                 1 cL       1000L

 

24.  A drag race track is ¼ mile long.  There are 5280 feet in a mile.  How many kilometers long is the drag race track?

 

http://en.wikipedia.org/wiki/File:Pro_Street_Camaro_at_launch.JPG

 

Answer:

 

5,280 feet  x   12 inches  x   2.54 cm  x  1 meter  x     1 km    =   0.40 km

       4                 1 ft           1 inch         100 cm      1000 m

 

25.  Which of the following is a derived unit of measure?

 

a.  kL

b.  m3

c.  mg

d.  slugs

 

The derived unit is m3, as it is derived by multiplying m x m x m = m3

 

26.  A cubic centimeter (1 cm3) is the same as ________________.

 

A cubic centimeter (1 cm3) is the same as 1 milliliter.

 

27.  How many cm3 are in 0.05 kL?

 

Answer:

 

0.05 kL  x    1000 L  x   1000 mL  x   1 cm3  =   50,000 cm3

     1             1 kL            1 L            1 mL

 

28.  The area of a singles tennis court is 2106 square feet?  How many meters squared is a tennis court?

 

http://en.wikipedia.org/wiki/File:Court_1.jpg

 

Answer:

 

2106 ft2  x   144 in2  x    6.45 cm2  x       1 m2         =  195.6 m2

     1             1 ft2           1 in2          10,000 cm2

 

Singles court is 78 ft x 27 ft = 2106 ft2