1
Q
produces a number and describes a property in terms of how much
A
quantitative
2
Q
made using only the senses and is expressed using words rather than numbers
A
qualitative
3
Q
tells the amount of the quantity measured
A
number
4
Q
tells the type of quantity measured
A
unit
5
Q
the measure of how closely individual measurements agree with each other
A
precision
6
Q
how close the individual measurement are to the true value
A
accuracy
7
Q
______ ________ don’t have uncertanties
A
exact numbers
8
Q
4 steps to dimensional analysis
A
- identify the known and desired quantities
- write down known quantity - leave some working space by drawing a horizontal line - and set known quantity equal to units of the desired quantity
- determine the conversion factor for the equation
- carry out the necessary arithmetic to solve the problem
(known amt.) x conversion factor (desired units/known units) = desired units
9
Q
ratio that shows how one unit of measure is related to another unit of measure
A
conversion factor (ex. 1 hr = 60 min)
1hr/1hr = 60min/1hr……..or 60min/1hr
10
Q
3 rules for zeroes being significant figures
A
- sandwiched between numbers (109)
- trailing zeroes in decimal place (0.03400)
- trailing zeroes with decimal point following (180 or 1.80)
