practical skills Flashcards
1
Q
what’s an independent variable?
A
something you can change in an experiment
2
Q
what’s a dependant variable?
A
the thing you measure in an experiment
3
Q
what are control variables?
A
variables that are kept the same in an experiment
4
Q
what is absolute uncertainty?
A
the uncertainty of a measurement given as a certain fixed quality
5
Q
what is fractional uncertainty?
A
the uncertainty given as a fraction of the measurement taken
6
Q
what is percentage uncertainty?
A
the uncertainty given as a percentage of the measurement
7
Q
how do you calculate percentage uncertainty?
A
uncertainty/measurement x 100
-make sure x2 if a ruler with uncertainty both sides
