Units of Measurement                             Click here for useful conversions

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Every measurement has to have a value and a unit.
The unit shows us what you have been measuring       
 

Quantity

Unit

Method of measurement

Distance

Metre (m)
Centimetre(cm)

Use a metre rule

Time

Second (s)

Stop watch, timer

Mass

Kilogram (kg)
Gram (g)

Use a top pan balance

Force

Newton (N)

Spring balance (newton metre)

Weight

Newton (N)

Spring balance or scales

Energy

Joules (J)

Energy meter

Pressure

Newtons per square centimetre (N/cm2)

Use the formula:

Pressure    = force
area

Density

Grams per cubic centimetre (g/cm3)

Use the formula :

Density     = mass
volume

Volume
 

Cubic centimetre (cm3)

For a rectangular block use the formula
V= height x width x length

For a liquid, use a measuring cylinder.
Volume of a liquid Millilitre (ml)  

Area

Square centimetre (cm2)

use the formula:

area = length x width

Current

amp, (A)

Use an ammeter

Voltage

Volt (V)

Use a voltmeter

Temperature

Degrees Celsius (E C)

Use a thermometer

Speed

Metres per second (m/s)

Use the formula:

speed      = Distance
Time

 

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