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The Metric System

Measurements, metric units and prefixes

TermDefinition
Unit A word or symbol that comes after a number to explain what we are measuring
Mass The amount of matter in an object
Length End-to-end distance of an object
Volume How much space something takes up
Metric unit for mass grams (g)
Metric unit for length meters (m)
Metric unit for volume liters (L)
Metric unit for time seconds (s)
Kilo- A prefix meaning 1,000
Centi- A prefix meaning 1/100
Milli- A prefix meaning 1/1,000
Ruler or meter stick A tool used to measure length
Triple beam balance A tool used to measure mass; it acts like a balancing scale
Graduated cylinder A tool used to measure the volume of a liquid; it looks like a tall, skinny cup with measuring marks on the outside
Meniscus The bottom of the dip at the top of a liquid in a graduated cylinder; this is where we measure from
Scientific Notation A way to write really large or small numbers; has the form of a base number times 10 raised to a power
Significant figures The number of digits that can be known in a measurement without question; more precise tools give readings with more significant figures
Prefix Part of a word that comes before a unit to show size
Water displacement The process of measuring the volume of a small solid: put some water in a graduated cylinder and measure the initial volume, then add the solid and measure the new volume - the difference between those two volumes is the volume of the solid
Equation to solve for the volume of a box length x width x height
Created by: chussey07
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