The metric system - SI The system of measurement in science Lecture Notes.
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Transcript of The metric system - SI The system of measurement in science Lecture Notes.
![Page 1: The metric system - SI The system of measurement in science Lecture Notes.](https://reader036.fdocuments.net/reader036/viewer/2022072112/5697c0021a28abf838cc32ed/html5/thumbnails/1.jpg)
The metric system - SI
The system of measurement in science
Lecture Notes
![Page 2: The metric system - SI The system of measurement in science Lecture Notes.](https://reader036.fdocuments.net/reader036/viewer/2022072112/5697c0021a28abf838cc32ed/html5/thumbnails/2.jpg)
Meter, Liter, Kilogram
Length- the distance between two points; the Meter is the base unit for length
Volume- amount of space something occupies; the Liter is the unit for volume of liquids
Mass- the amount of material something has in it; the Kilogram(Kg), is the base unit for measuring mass
![Page 3: The metric system - SI The system of measurement in science Lecture Notes.](https://reader036.fdocuments.net/reader036/viewer/2022072112/5697c0021a28abf838cc32ed/html5/thumbnails/3.jpg)
Making base units larger or smaller
Prefix Abbrev. MeaningK ilo- K 1,000hecto- h 100deka- da 10deci- d .1 (1/10)
centi- c .01(1/100)
milli- m .001(1/1000)
![Page 4: The metric system - SI The system of measurement in science Lecture Notes.](https://reader036.fdocuments.net/reader036/viewer/2022072112/5697c0021a28abf838cc32ed/html5/thumbnails/4.jpg)
Measuring
Length is measured by• metersticks or metric rulers
Volume is measured by• liquid volume by a graduated cylinder-
always read from the bottom of the meniscus
Mass is measured by• triple-beam balance or digital balance
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Derived Units
Area- the amount of surface within a set of boundaries• Length X Width= Area• Possible units cm2
Volume- the space an object occupies• Length X Width X
Height= Volume• Possible units cm3
Density- the amount of matter in a unit volume of any substance• Mass / Volume= Density• Possible units g/cm3
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Weight vs. Mass
Weight- a measure of the gravitational force exerted on an object by another body• SI unit for
gravitational force is newtons
Mass of an object is the same no matter where it is measured in the universe
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Time and Temperature
Time- measurement of the span between two events• The SI unit for time is
the second
Temperature- a measure of the average kinetic energy of all particles within an object• Measured with a
thermometer• Scientist often use the
Celsius scale• The SI unit is Kelvin• Degree Celsius +
273= Kelvin