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Metric System- Mrs. Garrahy

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Skyler Garrahy

on 15 September 2015

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Transcript of Metric System- Mrs. Garrahy

Lets learn
the Metric System
The system is suppose to be simple and easy, but for most people it's not
It's a decimal measuring system based on the meter, liter, and gram as units of length, capacity, and weight or mass.
Watching this next video you'll develop an understanding of how the conversions work
Here's a chart to represent prefixes, symbols, and scientific notation used in the metric system.
An Example
Track and Field
Convert miles to kilometers

A foreign exchange student is spending their senior year at a U.S. High School. The student goes out for track and is entered in the 1mile race. This student has no idea how long a mile is because there used to reading everything in kilometers. Here's how I would help this student.
This is showing English to Metric
We know The following information:
1in.= 2.54cm
12in.= 1 ft
1mile= 5280ft
100cm= 1m
1000m= 1km
Since were trying to convert miles to kilometers you would start with miles



The equation should look ilke this

I showed it this way to
show how the units
cancelled out
This is one
equation
just written
several
times
The equation
Multiply straight across
both numerator and the
denominator
You'll then get your answer
Then, divide numerator and denominator
There are five zeros so move
the decimal 5 places to the left
The student now knows how many kilometers 1 mile is
Now this foreign exchange student is
interested in throwing shot put and is
wondering how heavy it is, in other
words what is the mass. I would
tell him/her that a shot put at
High School level weighs 12 lbs.
This is how I would show the conversion
from lbs to kilograms or lbs to grams
so they would understand.
The given information
we know is this:

1 oz = 28.3 g
2.2 lbs = 1 kg

1000 g = 1 kg
This is how to
set the equation
up because
you are
converting lbs
to to Kilograms




Now, your converting
Kilograms to grams
Notice the lbs
cross out
Overall answer
Kg crosses out
leaving you with
grams (g)
Then I inform the student
on how to stay hydrated. I
explain that it's important
to drink eight 8oz (250ml)
glasses of water a day; especially
for a runner. The student needs
to know how many liters that is
so they can understand.
Information to know for Volume:
1 milliliter = .001 liter
1 centiliter = .01 liter
1 deciliter = .1 liter
1 kiloliter = 1000 liter
This is the pattern
1 liter = 1000 ml
2 liter = 2000 ml
3 liter = 3000 ml
Since you need eight 8 oz. glasses of water to stay hydrated you look on the bottle and notice that 8 ounces is equal to 250 ml. In order to figure out how many milimeters is in eight 8 oz bottles you have to multiple 250 by 8 and you get 2000 ml. Next, you have to convert mililiters to liters.


2000 ml divided by 1000ml
you get 2 and the number 2 is the amount of liters it takes to keep you hydrated.
To stay hydrated
you need eight of these
In all a total of 64 oz.
The two of
these show how
much water
is needed.
Concentration is the abundance of the constituent divided by the total volume of the mixture.
Converting Pounds to Kilograms,
then converting Kilograms to grams
Converting Milliliters to Liters
Volume is quantity of a three dimensional thing enclosed by some closed boundary; the space that a substance or a shape occupies or contains
Mass is the amount of matter in an object.
This chart
represents common metric measurements
250 ml
295.7 ml
354.9
591.5
500 ml
500 ml
1 liter
= 1000 ml
2 liters
equals 2000 ml
12 cans of soup is usually
equal to 12 lbs
In track, it's important for runners to stay hydrated
Sweating causes dehydration
and a loss of electrolytes
electrolytes are the salts
your body needs for proper functioning(sodium,chloride,
potassium).
Without proper function of electrolytes and fluids a person might experience muscle cramps, nausea, vomiting, coma, or even death.
The reasonsings for for gatorade:
*
Provide water to replace lost fluid
*
Mimic the salt concentration of the body to replace lost salt
Gatorade is isotonic meaning
a solution that has the same
salt concentration as the normal
cells of the body and the blood
When a person exercises they usually loose 900 to 1400 milligrams og sodium per liter of sweat
Gatorade is important to drink to stay
hydrated because it contains about
450 milligrams of sodium per liter
Concentration of Na(sodium)
in a 32 oz. gatorade bottle
One serving
= 240 mL (4 servings/bottle)

Total volume
= 32 fl. Oz = 960 mL = .960 L

[Na]
= 110 mg/8fl. Oz. = 110/240 mL

960 x 110mg Na = 440mg
240 mL

Na= 440 mg/.960 L
We know the following:
The End
Lincoln Middle School Students
These are your measurement notes for
your SNB
Full transcript