Observations and SI Flashcards
(21 cards)
2 types of observations
Qualitive, Quantative
Quantative
numerical
Qualitive
Categorical
Independent variable
the variable you change
Significant Figure Rules
- All nonzero digits are significant,
- All 0’s that are found between nonzero digits are significant
- Trailing zeroes for a whole number that ends with a decimal point are significant
Base unit of measuremnet for length
meters
Leading zeroes (to the left of the first nonzero digit) are significant or not?
Not significant
Whatever digits the ___ number has is how many the answer will have
least
Mass
measure of the amount of matter an object contains
Base unit of meausrement for Mass
Kilogram
Weight
A measire of the force of gravity on you
SI unit of weight
Newton (N)
You weight ___ on other planets becuase your force on gravity is less
less
Volume
the amount of space an object takes up
To measure the volume of a liquid in a graduated cylinder you…
read the level @ the bottom of the mensus/curve
SI unit of time
second
Density
Mass per unit volume
If you know somethings density you know…
if it can sink or float in a given lliquid, considering if its more or less dense then the liquid
Accuracy
refers to how close a measurement is to the true or actual values
Precison
how close a group of measurements are to each other
