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The Metric SystemPacket #6

04/19/23 10:18 PM © Ryan Barrow 2008

Introduction

The data recorded, during the experiment, has to be in a language that is understood by different individuals within the same fieldA Universal Language

The Metric System (4 Parts--Fantastic Four) Mass Temperature Volume Length

04/19/23 10:18 PM © Ryan Barrow 2008

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Units of Measurements

Prefixes that denote multiples of 10Tera 1012

Giga 109

Mega 106

Kilo 103

Centi 10-2

Milli 10-3

Micro 10-6

Nano 10-9

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Measurements ContinuedChanging of prefixes

When moving from large units to small units, we multiply

When moving from small units to large units, we divide

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Mass

The amount of matter in an object

Mass is measured in kilograms (kg).1 kilogram = 1000 grams1 gram = 1000 milligrams1000 kilograms = 1 metric ton

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Three Phases of Matter

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Mass vs. Weight

Mass and weight are different

ForceThe push or pull required to change the state of motion of an object

Gravitational ForceThe force of attraction that every particle of mass in the universe exerts on every other particle

Weight is the pull of gravity on a body of massWeight is the force that gravity exerts on an object.

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Mass vs. Weight II

Mass is always constant regardless of where the mass is located in the universe

Weight changes depending on the amount of gravitational force

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Calculating Weight

F = ma

Force = mass * accelerationWeight is a measurement of force

W = mg g = acceleration due to gravity 9.8 m/s2 ((10 m/s2))

http://www.exploratorium.edu/ronh/weight/Weight on other worlds

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Temperature

The degree of hotness or coldness of a body of mass or environment.

There are three scales of measurement Celsius

The scale of choice Fahrenheit Kelvin

0 degrees = Absolute zero (lowest possible temperature that can be attained by cooling an object.

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Calculating Temperature

ScalesCelsius

T (Celsius) = (5/9)*(T (Fahrenheit) -32)Fahrenheit

T (Fahrenheit) = ((9/5) * (T (Celsius)) + 32Kelvin (Absolute)

0 degrees = Absolute zero (lowest possible temperature that can be attained by cooling an object = T (Celsius) + 273.15

04/19/23 10:18 PM © Ryan Barrow 2008

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Volume

The amount of space that a 3D object takes up

Volume is measured in liters1 Liter = 1000 milliliters (mL)1 Liter = 1000 cubic centimeters (cm³)

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Length

A linear measurement of an object, end-to-end; it is usually the longest dimension.

Length is measured in meters.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

1 meter = 10,000,000,000 Angstroms

04/19/23 10:18 PM © Ryan Barrow 2008

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Review

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Review

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