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Measurment
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What is measurement ?
The process of using numbers to describe a quantity of process. All numbers must have a unit of measure.
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Why is measurement important?
Measurement allows us to describe processes and events.
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Length-
The distance between two points.
Tools: Ruler, meter stick or tape measure.
Units : meters (m), centimeters (cm), millimeters (mm), or kilometers (km).
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Time -
The interval between two events.
Tools: clock, stopwatch or timerUnits: hours (h), minutes
(min.), or seconds (sec).
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Mass
The amount of matter in an object
Tools: Triple Beam BalanceUnits: grams (g), milligrams
(mg), or kilograms (kg)
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Temperature-
The amount of energy within a sample of matter.
Tools: ThermometerUnits: Celsius (˚C), Fahrenheit
(˚F), or Kelvin (˚K)
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Volume -
The amount of space an object takes up. Tools:
A ruler for regulary objects (length x Width x height)
A graduated cylinder for irregulary objects (water displacement method)
A graduated cylinder for liquids ( reading the meniscus)
Units: centimeters cubed (cm3), liters (L), or milliliters (mL).
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Irregular vs Regular
Irregular : Rocks, Scissors, Glue, Pebble, Marble, You , etc…
Regular : Squares, Rectangles
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Metric System-
A base-ten system. Sometimes called the International
System of Units or abbreviated as SI.
Examples : millimeter , centimeter, meter, Kilometer, Celcius, gram, milliliter , liter
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US Customary Units –
Standard units of measurement commonly used in the United States.
Examples : gallons, ounces, pound, inches, feet, yard, mile, cups