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It is the system of units primarily used by the United States. It is not the system of units used in science
Metric system -
A standardized system of units based on 10
closeness to a set of measurements of the same quantity madeht same way
All the digits that can be known precisely in a measurement, plus a last estimated digit
An element in the 3rd period considered a metalloid
What symbol is used to denote the total distance travelled around a circle?
what si the unit for Amount of a Substance
amount of mass per units volume
A measure of space (lwh)
least Sig Fig number
Number of Sig Figs during Multiplication and Division
fewest decimal places of figure
Number of Sig Figs during addition and Subtraction
Non-Zero Intagers, ex. 1473.
Leading zeros, ex. 0.00024
Determine the number of Significant figures in the following: 0.00035L
a specific category that describes a number
a unit of length for longer things, like a race track
a unit of mass used for larger objects, like a pineapple
base unit of time in the metric system
base unit of charge in the metric system
A unit defined by a combination of base units
Thought of light as a particle. If he was correct, light should travel faster in a denser medium.
10 to the second power (100)
U.S. Customary System of units
uses foot, inch, mile, pound, bushel, peck, etc. Unwieldy and causes unnecessary confusion
_______ is used to represent a very large or very small number as a power of 10
What does a positive exponent indicate?
true location of decimal point is to the right of where it is written.
What does a negative exponent indicate?
true location of decimal point is to the left of where it is written
How to read 17.041,301
seventeen and forty-one thousand, three hundred one millionths
How to read 0.0,412?
four hundred twelve ten thousandths
What must we be careful not to do when using measurements in calculations?
must be careful not to assume that the answer we get is more precise than warranted by the preciseness of the measurements used to make the calculations.
How to state the range of uncertainty of a measure?
When is range of uncertainty not helpful?
when determining the accuracy of a calculation in which more than one measurement is used
assume the last digit of the measurement is a guess
What must we do when we cannot be sure of the instrument used to make a measurement?