STEM Physics Unit 1

11 cards·by 1jennagay

hypothesis

an educated guess that must be testable, be able to be measured, and be an "if" "then" statement

independant variable

the variable the scientists controls during the experiment and minipulates

dependent variable

variable that may or may not change bc of independent

accuracy

how close each measurement approaches a true value

percision

how close a series of measurments are to one another

3 fundamental dimensions

length- meter mass- kilogram time- seconds

derived unit

any unit other than the 7 base units that exist in the SI system (Cm^3)

percent difference

need the true value

percent error

find how much error was in your calculations

two methods we used to calculate density of metal cylinder

direct (linear) measurement and displacement

different parts of a complete graph

title, label x (ind) and y(dep), units, and proper spacing