Independent variable
its vaule depends on changes in the independent variable
dependent variable
a variable that depends on changes
positive control group
a group that does not include change to the variable being tested
negative control group
a group that is not exposed to the experiment treatment
constant variable
anything that is held constant or limted
claim
a brief answer to a question
evidence
involves a rule or scientific principle that describes why the evidence supports the claim
reasoning
observations and data that support the claim
significant figures
the number of digits in a vaule often a measurement
conversion factor
a number used to change one set of units to another by multiplying or dividing
accuracy
how close a measurement is to the actual value
precision
a measure of how close a series of measurements is to the correct or accepted vaule of quantity