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# 2-Measurement

TermDefinition
Precision refers to the ability to take the same measurement and get the same result over and over
Accuracy refers to how close a measured value is to the true measurement (true value) of something
Weight A measure of the pull of gravity between an object and the earth. Therefore, weight is actually a measure of force.
Mass A measure of the quantity (or amount) of material in a substance
Volume The amount of space that matter occupies or takes up. (For solids, length x width x height)
Length A measure of how long an object is or the distance an object spans.
Density The amount of matter per unit of volume. How much matter occupies a given space. Density equals mass divided by volume
Temperature A measure of the average kinetic energy (energy of motion) of particles of matter.
Force The amount of push or pull on an object, such as gravity and magnetism.
Pressure The amount of force exerted per unit area. Pressure equals force divide by area.
Extrinsic (extensive) properties Properties that change based on the amount of substance present. Mass is an example of an extrinsic property. The larger an object, the more mass it has.
Energy A measure of the ability to do work or generate heat. There are many different forms, including mechanical, chemical, and thermal energy
Multipliers prefixes greater than one, such as deca–, kilo–, and giga–
Intrinsic (intensive) properties Properties that do not change based on the amount present. (a small amount water has the same density as a large amount)
Scientific notation The method scientists use to quickly write very large or very small numbers by writing 10 with an exponent instead of many zeroes.
Fractions prefixes less than one, such as deci–, milli–, and nano–
Created by: rvotaw