Metrics
Why is it necessary to use metric units?
1. How tall is a 6 foot man?
a. 1 league
b. 1 fathom
c. 1 rod
2. How much milk is in a gallon jug?
a. 4 pints
b. 2 quarts
c. 5 pecks
d. 1 furlong
d. 32 gills
3. How much does a quarter pounder weigh before cooking?
a. 1750 grains b. 128 drams c. 8 ounces d. 1 hundredweight
4. How much does your average 2 1/2gram penny weigh?
a. 1 pennyweight b. 39 grains
c. 20 scruples d. 47 apothecaries' dram
5. At what temperature does water freeze?
a. 0o Fahrenheit b. 492o Rankine c. 32o Centigrade d. 100o Kelvin
1. How tall is a 6 foot man?
a.
1 league
*b. 1 fathom
15840 feet
6 feet
c.
2. How much milk is in a gallon jug?
a.
4 pints
b. 2 quarts
c.
1/4 gallon
1/2 gallon
1 rod
16.5 feet
d.
1 furlong
5282 feet
5 pecks
2 gallons
*d. 32 gills
1 gallon
3. How much does a quarter pounder weigh before cooking?
*a. 1750 grains
b.128 drams
c. 8 ounces
d. 1 hundredweight
1/4 lb
1/2 lb
1/2 lb
100lbs
4. How much does your average 2 1/2gram penny weigh?
a. 1 pennyweight *b.39 grains
c. 20 scruples d. 47 apothecaries' dram
12 grams
2.5 grams
15 grams
1.5 grams
5. At what temperature does water freeze?
a.
0o Fahrenheit
*b. 492o Rankine
-18oC
0o C
c. 32o Centigrade d. 100o Kelvin
32o C
173oC
Did you score 100% If you
did not, don't feel badly.
There were a lot of
measurements in those
questions that you might
not be familiar with
because they are different
types of measurements
that are used all over the
world.
Sometimes, even the same measurement means
different things, take for example the measurement
"ton".
1 U.S. short ton = 2,000 pounds
1 U.S. long ton = 2,240 pounds
1 nautical ton = 100 cubic feet
1 freight ton = 40 cubic feet
1 metric ton = 1,000 kilograms or 2,205 pounds
1 displacement ton = 35 cubic feet.
I'm sure you can imagine how confusing it could
be, for scientists all over the world to measure
things if they had to convert them all the time
from different measurement scales. So, in 1960
S.I. units (from the French Systeme
Internationale, or the International System) was
adopted by the General Conference on Weights
and Measures -- the sixth such conference since
1840.
The International System was a modern form of
the metric system. This following is a basic
summary of measurements under the metric
system:
What’s
being
measured
Units
Length
Mass
Volume
Temperature
Meter
(m)
Grams
(g)
Liter
(l)
Instrument
Meter
stick
Degrees
Celsius
(oC)
Thermometer
Scale
Graduated
(balance) cylinder
Due to ad-hesion,
water sticks to
things unlike it. So
often, water will
cling to the sides
of a glass
graduated cylinder.
When reading a
graduated cylinder,
read at the bottom
of the meniscus.
Determine the following volumes:
1.
2.
3.
4.
Convert the following temperatures:
0oC = ___ oF
32oC = ___ oF
212oC = ___ oF
-30oC = ___ oF
0oF = ___ oC
98.6oF = ___ oC
212oF = ___ oC
-12oF = ___ oC
Metrics use base 10
G
i
g
a
M
e
g
a
Kilo Hecta Deca
1x
10
9
1x
10
6
1000
100
1X103
1X102
1
deci
centi
milli
Meter
Liter
Gram
10
1
1/10 1/100 1/1000
0.1 0.01 0.001
1X10-2
1X10-3
m
i
c
r
o
n
a
n
o
1
x
1
0
6
1
x
1
0
9
Scientific Notation (100 = 1)
100 = 1 X 102
1000000 = 1 X 106
1000000000 = 1 X 109
0.01 = 1 X 10-2
0.000001 = 1 X 10-6 0.000000001 = 1 X 10-9
Practice converting the following :
1) 23.5 M =
2) 134.56 mm. =
3) 98.43 L =
4) 345.34 Km =
5) 34 g. =
6) 123.43 cg. =
7) 32.5 L. =
8) 456.3 g. =
9) 3908.3 Kl. =
10) 0.0045 Dg. =
_____cm.
_____ M
____ ml.
____ dm.
____ Kg.
_____Hg.
_____ml.
_____ cg.
____ ml.
____ cg.
= _____Gm
= _____ nm
= _____ um
= _____ Mm
= _____ um
= _____ ug
= _____ Gl
= _____ Mg
= _____ L
= _____ dg
For More Practice…
• http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/f
iles/Bio%20101/Bio%20101%20Laboratory/Metric%20Sy
stem/Metric_System.htm
• Science Lab Equipment:
http://staff.tuhsd.k12.az.us/jerwilliams/Science%20Lab%2
0Equipment.htm