“systeme international” base 10 system works for all units of measurement length, volume,...
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The Metric System
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“Systeme International”
Base 10 System
Works for all units of measurement length, volume, time, and mass
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length, volume, time, mass
The Standard or English System is what you are used to using in the US … MOST other countries use METRIC!
Length = Inch or Foot Volume = Cup, ounce, gallon Time = Second Mass = Pound
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length, volume, time, mass
The Metric system is used for ALL sciences.
Length = Meter (m) Volume = Liter (L) Time = Second (s) Mass = Gram (g)
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Base 10 Metric
10 millimeters = 1 centimeter
10 centimeters = 1 decimeter
10 decimeters = 1 meter
10 meters = 1 dekameter
10 dekameters = 1 hectameter
10 hectameters = 1 kilometer
English 12 inches = 1 foot 3 feet = 1 yard 5.5 yards = 1 rod 320 rods = 1 mile
5280 feet = 1 mile
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Easy to use
Base 10 allows scientists to easily change units to make numbers more manageable
How many days old are you?
Easier to use years huh…
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Making Observations
Science is all about combining observations into big ideas Sometimes we describe▪ Dogs are larger than mice
Sometimes we take measurments▪ The average height of a dog is 0.56 m
Those Observations must be PRECISE AND ACCURATE
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What observations can we make?
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Making Observations
ACCURATE As close to the known value as possible
PRECISE Every measurement is of the same thing
is close to one another
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Making Observations
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Prefix – name in front of the unit
DownRightUp Left
1 cm = 0.01 m1 cm = 10 mm
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Example: 1.2hL dL
3 steps down to the right = 1200 dL
340.2cg kg 5 steps up to the left 0.003 402 kg