Unit 1- Measurement Flashcards
Precision
How close several measurements are to each other/ how close to another measurement
Accuracy
How close a single measurement comes to the ACTUAL VALUE of whatever digit is being measured
% error
A % that shows how much the measured value differs from the accepted value
Sig Figs
All the digits that can be known in a measurement plus one estimated,
Indicates how precise a measurement is and its confidence
Meter
The SI unit of length
Dimensional analysis
A way to analyze and solve problems using the units of a measurement
Any non-zero is always ___
Significant
When measurements are being added or subtracted the answer can be recorded to what
The least precise place of the recorded measurements
Metric line order…
Giga x x mega x x kilo hecto deca BASE deci centi milli x x micro x x nano x x pico
Equation: percent error
% error= (actual value-measured) divided by actual value x100
Equation to solve for Kevin
K= C+ 273
0 freeze, 100 boil
273 is Kelvins lowest
0K =
Absolute zero
- to creat negative numbers