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science ch 3
science
Question | Answer |
---|---|
what is all measurable properties of matter and energy | dimensions |
what is a known quantity that everyone agrees will be used for comparison when measuring | standard |
what is any artificial device made for the purpose of refining extending or substituting for the human sense of measuring | instrument |
what is the segment of a dimension assigned a value of 1 for measuring purposes | unit |
what is the spacing of the marks on the instrument | graduated scale |
what system was invented in 1779 by a Frenchman that consist of meters kilograms | metric system |
1km =______m | 1000 m |
1m=_______cm | 100cm |
1m______mm | 1000mm |
1L_________mL | 1000mL |
1kg_________g | 1000g |
5k about __________mi | 3.1 |
1.6km about _________ mi | 1 |
giga | billion |
mega | million |
kilo | thousand |
centi | hundredth |
milli | thousandth |
micro | millionth |
nano | billionth |
why are measurements never exact | human error weather damaged instrument scale isn't precise enough |
how many sig digs is 506.0101kg | 7 |
how many sig digs is 6 eggs | N/A |
scientific notation 0.010mg | 1.0x10^-3 |