Test 2 Flashcards
Circle Graph
Shows parts of a fixed whole, pie chart
Bar Graph
Used to show how a quantity varies with factors such as time, location, or temp
Line Graph/scatter plot
points on a graph represent the intersection of data for two variables
Accuracy
how close a measurement is to its accepted value
Precision
how close measurements are to each other
Percent Error
the ratio of an error to an accepted value
Significant Figures
include all known digits plus one estimated digit from a measurement
ASMD Rule
your answer can only have as many significant figures as the measurement with least number of significant figures
Scientific Notation
numbers expressed with three factors: #1-9 (coefficient) a base, and an exponent
Conversion Factor
a ratio of equal values used to express the same quantity in different units
Dimensional Analysis
method of problem solving that focuses on units used to describe matter
SI Units
-for a measurement to be useful, it must include a number and a unit
-in the past estimates were used
Base Unit
a defined unit in a system of
measurement based on an object or event in the
Second
the base unit for time
Meter
base unit for length
