Studied by 55 peoplescientific method
a logical approach to solving problems by observing and collecting data
system
a specific portion of matter in a given region of space that has been selected for study
hypothesis
a testable statement
model
an explanation of how phenomena occur and how data or events are related
theory
a broad generalization that explains a body of facts or phenomena
quantity
something that has magnitude, size, or amount
SI
a single measurement system called Le Systeme International d'Unites
weight
a measure of the gravitational pull on matter
derived units
combinations of SI base units
volume
amount of space occupied by an object
density
the ratio of mass to volume, or mass divided by volume
conversion factor
a ratio derived from the equality between two different units
dimensional analysis
a mathematical technique that allows you to use units to solve problems
accuracy
the closeness of measurements to the correct value of quantity measured
precision
the closeness of a set of measurements of the same quantity made in the same way
percentage error
calculated by subtracting the accepted value from the experimental value
significant figures
consists of all the digits known with certainty, plus one final digit, which is estimated
scientific notation
numbers written in the form M x 10^n, M is greater or equal to 1, but less than 10. N forms the number.
directly proportional
two quantities that can be divided by each other and give a constant value
inversely proportional
dividing the difference by the accepted value, and then multiplying by 100
Note
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