1. The Metric System
Packet # 8
Sunday, December 02, 2018

2. Introduction
The comprehensive decimal system created as a national standard in France in the 1790s, following the revolution, subsequently adopted on an international basis as the primary standard in many countries, and then the standard for science.
It is now the primary system for measurement in virtually all developed countries other than the USA; even there it provides the official basis for the measurement standards as well as the scheme for most science. Today it has become the SI system, with various technical differences from its predecessor.
Sunday, December 02, 2018

3. Prefixes Units of Measurements
Sunday, December 02, 2018
Prefixes Units of Measurements
Prefixes that denote multiples of 10
Tera 1012
Giga 109
Mega 106
Kilo 103
Centi 10-2
Milli 10-3
Micro 10-6
Nano 10-9
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4. Measurements Continued Changing of prefixes
Sunday, December 02, 2018
Measurements Continued Changing of prefixes
When moving from large units to small units, we multiply
When moving from small units to large units, we divide
Examples to be provided in class.
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5. The Metric System Scientists use the metric system for units of Length
Sunday, December 02, 2018
The Metric System
Scientists use the metric system for units of
Length
Volume
Mass
Temperature
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6. Length The basic unit for length is the meter. 1 meter = 100 cm
Sunday, December 02, 2018
Length
The basic unit for length is the meter.
1 meter = 100 cm
1 centimeter = 10 millimeters
1 meter = 1000 millimeters
1 meter = 1,000,000 micrometers
1 meter = 1,000,000,000 nanometers
Remember the prefixes and what they represent.
1 meter = 10,000,000,000 Angstroms
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7. Mass Mass = The amount of matter in an object
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Mass
Mass = The amount of matter in an object
The basic unit of mass is the kilogram
1 kilogram = 1000 grams
1 gram = 1000 milligrams
1000 kilograms = 1 metric ton
Sunday, December 02, 2018

8. Relationship of Mass to Weight
Weight = the pull of gravity on a body of mass
Important note
Mass does not change
Weight will change depending on the force of gravity
Weight = Mass * Acceleration due to the force of gravity
From the equation
F = MA
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9. Understanding Weight Force Gravitational Force
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Understanding Weight
Force
The push or pull required to change the state of motion of an object
Gravitational Force
The force of attraction that every particle of mass in the universe exerts on every other particle
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10. Understanding Weight II
Sunday, December 02, 2018
Understanding Weight II
Weight
The weight of an object is not the same as its mass.
Mass is always constant regardless of where the mass is located in the universe
Weight is the force that gravity exerts on an object.
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11. Calculating Weight F = ma Force = mass * acceleration
Sunday, December 02, 2018
Calculating Weight
F = ma
Force = mass * acceleration
Weight is a measurement of force
W = mg
g = acceleration due to gravity
9.8 m/s2 ((10 m/s2))
Mass is measure in kilograms
Sunday, December 02, 2018

12. Mass & Matter Recall that Mass is anything that contains matter
Sunday, December 02, 2018
Mass & Matter
Recall that Mass is anything that contains matter
Matter exists in three phases
Solid
Liquid
Gas
Sunday, December 02, 2018

13. Volume The amount of space that a 3D object takes up
Sunday, December 02, 2018
Volume
The amount of space that a 3D object takes up
The basic unit for volume is the liter.
1 Liter = 1000 milliliters (mL)
1 Liter = 1000 cubic centimeters (cm3)
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14. Sunday, December 02, 2018
Temperature
The degree of hotness or coldness of a body or environment.
A measure of the average kinetic energy of the particles in a sample of matter, expressed in terms of units or degrees designated on a standard scale.
Sunday, December 02, 2018

15. Temperature Scales & Conversions
Celsius
0 degrees = freezing point
100 degrees = boiling point
T (Celsius) = (5/9)*(T (Fahrenheit) -32)
Fahrenheit
32 degrees = freezing point
212 degrees boiling point
T (Fahrenheit) = (9/5) * (T (Celsius) + 32)
Kelvin (Absolute)
0 degrees = Absolute zero (lowest possible temperature that can be attained by cooling an object
= T (Celsius)
Sunday, December 02, 2018