Metric+Measurements

=Metric Measurements Page=

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Metric prefixes in everyday use

 * ~ Text ||~ Symbol ||~ Factor ||
 * tera || T || 1,000,000,000,000 ||
 * giga || G || 1,000,000,000 ||
 * mega || M || 1,000,000 ||
 * kilo || k || 1,000 ||
 * hecto || h || 100 ||
 * deca || da || 10 ||
 * (unit) || (unit) || 1 ||
 * deci || d || 0.1 ||
 * centi || c || 0.01 ||
 * milli || m || 0.001 ||
 * micro || μ || 0.000,001 ||
 * nano || n || 0.000,000,001 ||
 * pico || p || 0.000,000,000,001 ||
 * femto || f || 0.000,000,000,000,001 ||

Distance - length, width height (m - meters)
Also used for volume of a solid = lengtt x width x height


 * ~ Submultiples ||  ||||||~ Multiples ||
 * ~ Value ||~ Symbol ||~ Name ||^  ||~ Value ||~ Symbol ||~ Name ||
 * 10−1 m || dm || [|decimetre] ||^  || 101 m || dam || [|decametre] ||
 * 10−2 m || **cm** || **[|centimetre]** ||^  || 102 m || hm || [|hectometre] ||
 * 10−3 m || **mm** || **[|millimetre]** ||^  || 103 m || **km** || **[|kilometre]** ||
 * 10−6 m || **µm** || **[|micrometre]** ||^  || 106 m || Mm || [|megametre] ||
 * 10−9 m || **nm** || **[|nanometre]** ||^  || 109 m || Gm || [|gigametre] ||
 * 10−12 m || pm || [|picometre] ||^  || 1012 m || Tm || terametre ||
 * 10−15 m || fm || [|femtometre] ||^  || 1015 m || Pm || petametre ||
 * 10−18 m || am || attometre ||^  || 1018 m || Em || exametre ||
 * 10−21 m || zm || zeptometre ||^  || 1021 m || Zm || zettametre ||
 * 10−24 m || ym || yoctometre ||^  || 1024 m || Ym || yottametre ||
 * Common prefixed units are in **bold** face. ||

Mass - the amount of space occupied (taken up) by an object

 * Note:** we use "weight" in every day language but this use is not correct
 * weight** is the amount of gravity pull on an object and is measured in **newtons (N)**

A person will have different weights on the moon and earth because gravity is stronger on the earth BUT the same person will have the SAME mass on anywhere because they take up the same space. brick with a **mass of one kilogram** will have a weight of 9.81 newtons //(2.2 pounds)// on Earth, a weight of 1.62 newtons on teh Moon //(0.36 pounds)//, and a weight of zero newtons //(0 pounds)// on the International Space Station. But **in all cases it's mass will be the same**: one kilogram.
 * Example:**

mass scales

Mass Sites

Metric Mass introduction Khan Academy Mass Introduction video Grocery Store Metric Measurements Cooking conversions (metric to imperial) Metric conversions (metric)

**Speed - Velocity, Acceleration**

 * Speedometer**

**Acceleration (faster X faster)**




**Time**




Months (x28 days), Days (x24 hrs), Hours (x60 min), Minutes (x60 sec), **seconds**, milliseconds (ms), nanoseconds (us)

Liquid volume - Litres
How to measure liquid volume

Capacity and Measuring Tools Vocab



Solid Volume - cubic meters
Length x width x height (depth) - 3D shapes





Gas (or Air) volume - 1 litre = 1000 cubic centimetres (cm3)


Why a cruise ship floats - volume and mass - displacement and bouyancy


 * ~ Multiple ||~ Name ||||~ Symbols ||||~ Equivalent volume ||  ||~ Submultiple ||~ Name ||||~ Symbols ||||~ Equivalent volume ||
 * 100 L || **litre** || l (ℓ) || L || dm3 || cubic decimetre ||^  ||||||||   ||||   ||
 * 101 L || decalitre || dal || daL || 101 dm3 || ten cubic decimetres ||^  || 10−1 L || **decilitre** || dl || dL || 102 cm3 || hundred cubic centimetres ||
 * 102 L || **hectolitre** || hl || hL || 102 dm3 || hundred cubic decimetres ||^  || 10−2 L || **centilitre** || cl || cL || 101 cm3 || ten cubic centimetres ||
 * 103 L || kilolitre || kl || kL || m3 || **cubic metre** ||^  || 10−3 L || **millilitre** || ml || mL || cm3 || **cubic centimetre** ||
 * 106 L || megalitre || Ml || ML || dam3 || cubic decametre ||^  || 10−6 L || **microlitre** || µl || µL || mm3 || **cubic millimetre** ||
 * 109 L || gigalitre || Gl || GL || hm3 || cubic hectometre ||^  || 10−9 L || nanolitre || nl || nL || 106 µm3 || million cubic micrometres ||
 * 1012 L || teralitre || Tl || TL || km3 || cubic kilometre ||^  || 10−12 L || picolitre || pl || pL || 103 µm3 || thousand cubic micrometres ||
 * 1015 L || petalitre || Pl || PL || 103 km3 || thousand cubic kilometres ||^  || 10−15 L || femtolitre || fl || fL || µm3 || cubic micrometre ||
 * 1018 L || exalitre || El || EL || 106 km3 || million cubic kilometres ||^  || 10−18 L || attolitre || al || aL || 106 nm3 || million cubic nanometres ||
 * 1021 L || zettalitre || Zl || ZL || Mm3 || cubic megametre ||^  || 10−21 L || zeptolitre || zl || zL || 103 nm3 || thousand cubic nanometres ||
 * 1024 L || yottalitre || Yl || YL || 103 Mm3 || thousand cubic megametres ||^  || 10−24 L || yoctolitre || yl || yL || nm3 || cubic nanometre ||

Watts, Amps, Volts - measuring electrical power
A Watt is a measure of electric power that depends on amps and volts. The bulb in the middle makes the most light because it uses more watts than the other two. But notice that the bulb on the right is using the same amount of power as the bulb on the left, even though it's using only half of the current. **Watts = Volts x Amps**



battery, circuit, volt meter
 * Voltage (Volts -V)** a measure of the amount of how **easy or likely it is for electrons to move between negative and positive ends points of a wire, battery or curcuit** - this likelihood of electrons to move in a wire is called **electric potential - you can also say: how much force is needed to push electrons through a wire or circuit**

when **6.25 x 10^18 electrons or 6,250,000,000,000,000,000 electrons** (this amount of electrons is called 1 coulomb) **move past one point in a circuit or wire in one second**.
 * Amperage "amps"** is a measure of electrical current:
 * - so how many coloumbs move past a point in a wire in one second = amperage = electrical current**

Read more: [|http://wiki.answers.com/Q/What_is_the_difference_between_amperage_and_voltage#ixzz1O9CBXbMm]



BY THE WAY..... Does electric current flow form the positively (+) charged end or the negatively (-) charged end of a battery or wire. the answer is different for different situations: but this is a mistake - **basically electrons move from a place where there is more of them (negative charge) to a place where there are less of them (positive charge)**
 * In nature** - we say from negative to positive - http://mste.illinois.edu/murphy/HoleFlow/default.html
 * In a circuit or wire** - it's from positive to negative - http://mste.illinois.edu/murphy/HoleFlow/ElectricFluid.html


 * A simpler way to say it:**
 * Amperage (a)**, or current, is a measure of the amount of electrons moving in a circuit.
 * Voltage (V)** is a measure of how much force those electrons are under to go from one part of a wire to another.
 * Wattage** (W) is the amount of power in a wire **= amps x volts**

What kinds of things do you measure in Watts? (electrical power) Solar panels (sun energy) Wind e nergy Hydro (water_ power, nuclear power, coal power) Killowatts use per hour in your home




 * Sound energy** for an electric guitar and **amp**lifier

SI multiples for watt (W)||||||~ Submultiples
 * ||||||~ Multiples ||
 * ~ Value ||||||^  ||~ Symbol ||~ Name ||~ Value ||~ Symbol ||~ Name ||
 * 10−1 W ||||||^  || dW || deciwatt || 101 W || daW || decawatt ||
 * 10−2 W ||||||^  || cW || centiwatt || 102 W || hW || hectowatt ||
 * 10−3 W ||||||^  || **mW** || **milliwatt** || 103 W || **kW** || **kilowatt** ||
 * 10−6 W ||||||^  || **µW** || **microwatt** || 106 W || **MW** || **megawatt** ||
 * 10−9 W ||||||^  || **nW** || **nanowatt** || 109 W || **GW** || **gigawatt** ||
 * 10−12 W ||||||^  || **pW** || **picowatt** || 1012 W || **TW** || **terawatt** ||
 * 10−15 W ||||||^  || fW || femtowatt || 1015 W || PW || petawatt ||
 * 10−18 W ||||||^  || aW || attowatt || 1018 W || EW || exawatt ||
 * 10−21 W ||||||^  || zW || zeptowatt || 1021 W || ZW || zettawatt ||
 * 10−24 W ||||||^  || yW || yoctowatt || 1024 W || YW || yottawatt ||


 * Natural ENERGY - JOULES (J)**

Energy is the amount of work needed to put a force on another object. One joule is the **amount of energy it takes to lift an object that weighs one Newton a one meter distance**. A Newton is the metric unit for weight and is comparable to the weight of a stick of butter or an apple. (1 Newton = 0.445 lbs.)



[|How to change joules to KiloJoules]

SI multiples for joule (J)||||||~ Submultiples
 * ||||||~ Multiples ||
 * ~ Value ||||||^  ||~ Symbol ||~ Name ||~ Value ||~ Symbol ||~ Name ||
 * 10−1 J ||||||^  || dJ || decijoule || 101 J || daJ || decajoule ||
 * 10−2 J ||||||^  || cJ || centijoule || 102 J || hJ || hectojoule ||
 * 10−3 J ||||||^  || **mJ** || **millijoule** || 103 J || **kJ** || **kilojoule** ||
 * 10−6 J ||||||^  || **µJ** || **microjoule** || 106 J || **MJ** || **megajoule** ||
 * 10−9 J ||||||^  || **nJ** || **nanojoule** || 109 J || **GJ** || **gigajoule** ||
 * 10−12 J ||||||^  || **pJ** || **picojoule** || 1012 J || **TJ** || **terajoule** ||
 * 10−15 J ||||||^  || fJ || femtojoule || 1015 J || PJ || petajoule ||
 * 10−18 J ||||||^  || aJ || attojoule || 1018 J || EJ || exajoule ||
 * 10−21 J ||||||^  || zJ || zeptojoule || 1021 J || ZJ || zettajoule ||
 * 10−24 J ||||||^  || yJ || yoctojoule || 1024 J || YJ || yottajoule ||
 * Common multiples are in bold face ||

**Air Pressure - pascals**
http://vss.sd22.bc.ca/hpp/courses/geo12/course_material/unit9/U09L04.htm
 * More about weather maps **

**SUPER LOW PRESSURE WEATHER CONDITIONS**

Air pressure in a tornado

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A video of real tornadoes

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Hurricane Videos

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**FORCE (gravity and other forces = PUSH)**

 * Measured in Newtons (N) after the scientist Sir Issac Newton **







**Activity page for Metric names and measurements**