S.I. Unit Standard measure of a quantity Examples

› Length = Meter (m)› Volume = Liter (L)› Mass = Grams (g)› Temperature = Celcius (°C)

Mass Measure of the amount of matter in

an object Tools

› Scale› Balance

Unit› Kilogram (kg)› Gram (g)› Milligram (mg)

Mass (Continued) Measure of the amount of

matter in an object Mass of an object is the same

no matter where it is located› Does not change with location

Only way to change is to add or take away matter

Weight Measure of the gravitational force

(pulling) exerted on an object Changes when the force of gravity

changes› Differs on Earth & Mars

Tools› Spring Scale

Unit› Newton (N)

Volume Measure of the size of a body or

region in a 3-D space Meniscus: curvature of the water’s

surface that’s to be measured at the lowest point of the curve

Tools› Beaker› Graduated cylinder

Volume Unit

› Cubic Meter (m3)› Cubic Centimeter (cm3)› Milliliter (mL)› Liter (L)

Area Measure of the size of a surface/region Tools

› Meter stick› Ruler

Unit› Square Meters (m2)› Square Centimeters (cm2)› Square Kilometers (km2)

Temperature Measure of how hot or cold

something is Measure of the average kinetic

energy of the particles in an object Tools

› Thermometer Unit

› Kelvin (K)› Celsius (°C)

Density Ratio of the mass of a substance

to the volume of a substance Tools

› Mass: Balance or Scale› Volume: Graduated

Cylinder/Beaker/Ruler Unit

› g/mL› g/cm3