Studied by 15 people
Scientific method
logical approach to solving problems
Observing
the use of sense to obtain information
Qualitative
description
Quantitative
numerical
System
A specific portion of matter in a given region of space that has been selected for study during an experiment or observation
Hypothesis
testable statement
Hypothesis statements are often drafted as “______”
if-then
Controls
experimental conditions that remain constant
Variables
any condition that changes
Stages in the Scientific Method
Observing, Formulating Hypotheses, Testing, Theorizing, Publish Results
Model
A physical representation to explain something smaller or bigger
Theory
A broad generalization that explains a body of facts or phenomena
Quantity
Something that has magnitude, size, or amount
Length
meter
Mass
kilogram
Time
second
Temperature
kelvin
mega
10^6 | M
kilo
10³ | k
hecto
10² | h
deka
10^1 | da
deci
10^-1 | d
centi
10^-2 | c
milli
10^-3 | m
micro
10^-6 | µ
nano
10^-9 | n
Weight
measure of the gravitational pull on matter
To find density use:
D = m/v
To find mass use:
m = Dv
To find volume use:
v = m/D
cm³
mL
dm³
L
m³
kL
Directly Proportional
When one variable goes up, the other variable goes up.
Inversely Proportional
When one variable goes up, the other goes down.
Pacific-Atlantic Rule
If there is no decimal point, start from right to left. If there is a decimal point, start from left to right,
Addition/Subtraction w/ Significant Figures
Round to the least precise decimal point
Multiplication/Division w/ Significant Figures
Round to the least number of significant figures
Scientific Notation
M ×10^n
65,000 in scientific notation is
6.5 ×10^4
The percentage error equation is…
a measurement of accuracy
When using scientific notation,
only the significant numbers are shown
Natural Law
Describes how nature behaves, but does not explain why nature behaves the way it does.
Note 
Flashcard (21)