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. Example:
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.

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

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

battery, circuit, volt meter

Amperage "amps" is a measure of electrical current: 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. - so how many coloumbs move past a point in a wire in one second = amperage = electrical current

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: 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
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)

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 energy
Hydro (water_ power, nuclear power, coal power) Killowatts use per hour in your home

Sound energy for an electric guitar and amplifier

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.)

## Metric Measurements Page

Powers of 10 Website

## Table of Contents

## Metric prefixes in everyday use

## Distance - length, width height (m - meters)

Also used for volume of a solid = lengtt x width x height

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

Note:we use "weight" in every day language but this use is not correctweightis the amount of gravity pull on an object and is measured innewtons (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.

Example:brick with a

mass of one kilogramwill 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. Butin all cases it's mass will be the same: one kilogram.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, AccelerationSpeedometer## Velocity

Acceleration (faster X faster)TimeMonths (x28 days), Days (x24 hrs), Hours (x60 min), Minutes (x60 sec),

seconds, milliseconds (ms), nanoseconds (us)## Volume

## Liquid volume - Litres

How to measure liquid volumeCapacity 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

litredecilitrehectolitrecentilitrecubic metremillilitrecubic centimetremicrolitrecubic millimetre## 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 AmpsVoltage (Volts -V)a measure of the amount of howeasy 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 calledelectric potential - you can also say: how much force is needed to push electrons through a wire or circuitbattery, circuit, volt meter

Amperage "amps"is a measure of electrical current: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.- so how many coloumbs move past a point in a wire in one second = amperage = electrical currentRead 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:

In nature- we say from negative to positive - http://mste.illinois.edu/murphy/HoleFlow/default.htmlIn a circuit or wire- it's from positive to negative - http://mste.illinois.edu/murphy/HoleFlow/ElectricFluid.htmlbut 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)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 voltsWhat kinds of things do you measure in Watts? (electrical power)

Solar panels (sun energy)

Wind energy

Hydro (water_ power, nuclear power, coal power) Killowatts use per hour in your home

Sound energyfor an electric guitar andamplifierSI multiples for watt (W)||||||~ Submultiples

mWmilliwattkWkilowattµWmicrowattMWmegawattnWnanowattGWgigawattpWpicowattTWterawattNatural 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

mJmillijoulekJkilojouleµJmicrojouleMJmegajoulenJnanojouleGJgigajoulepJpicojouleTJterajouleAir Pressure - pascalsMore about weather mapshttp://vss.sd22.bc.ca/hpp/courses/geo12/course_material/unit9/U09L04.htm

SUPER LOW PRESSURE WEATHER CONDITIONSAir pressure in a tornado

A video of real tornadoes

Hurricane Videos