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Phsical science ch 3
chpater 3 notes and what not
Question | Answer |
---|---|
measurement | a comparison of a dimention of an object or substance to an appropriate standard usually an instrument with a calibrated scale. |
dimension | a proporty that can be measured ( Ex. length, temperature, mass, time) |
standard | a known quantity that everyone agrees will be used foe comparison when measuring. |
instrument | like a thermometer, scales, meter stick, graduated cylinder |
unit | the segment of a dimension assigned the value of 1 (ex. meter, gram, degree) |
calibrated scale | the size of the unit deternins the spacing of the marks on the instrumment |
data | information collected from scientific observation |
giga- | G, billion, 1,000,000,000 |
mega- | M, million, 1,000,000 |
kilo- | k, thousand, 1,000 |
centi- | c, hundreth, 0.01 |
milli- | m, thousandth, 0.001 |
micro- | u, millionth, 0.000001 |
nano- | n, billionth, 0.000000001 |
meter | length, m |
kilogram | mass, kg |
second | time, s |
ampere | electric current, A |
kelvin | absolute temperature, K |
mole | amount of substance, mol |
candela | radiant intensity, cd |
weight | indicates the amount of matter in an object as gravity pulls down on it. it is the mass of an object pulled down by gravity |
newton | weight, N |
Mass | the amount of matter in an object.(how much stuff is there) |
volume | the amount of space the matter occupies |
density | how compact the particals are |