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Year 11 Measurement

Measurement and Energy

TermDefinition
mass a measure of the amount of matter in a body
area the amount of space inside the boundary of a flat (2-dimensional) object
volume the amount of 3-dimensional space an object takes up.
length how far from end to end. Or from one point to another
precision smallest unit on measuring instrument or limit of reading
absolute error the difference between the actual value and the measured value indicated by the instrument
relative error calculated by dividing the precision by the actual measurement
standard form or scientific notation used to write very large or very small number more conveniently
significant figures used to specify the accuracy of a number
kilojoule measures food energy
power rate at which energy is generated or consumed
watt is the SI unit of power
energy consumption is the amount of energy consumed per unit of time
Created by: wdobson