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Scientific Method
Scientific method vocabulary
25
Biology
9th Grade
02/03/2010

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Term
qualitative observations
Definition
observations made with the five senses and written in adjectives
Term
quantitative observations
Definition
observations made with measurements and written in numbers
Term
hypothesis
Definition
a tentative explanation that accounts for a set of facts that can be tested by further investigation
Term
independent variable
Definition
the variable you change in an experiment
Term
dependent variable
Definition
the variable that may change as a result of a change in the independent variable and that you measure
Term
inference
Definition
an educated guess based on observations
Term
prediction
Definition
something that you think might occur in an experiment
Term
data
Definition
a collection of organized information, results
Term
constant
Definition
the variables you keep the same in an experiment
Term
control group
Definition
the group in the experiment where the independent variable is not changed
Term
procedure
Definition
a series of steps that you take to complete an experiment
Term
conclusion
Definition
an informed inference based on experimental data
Term
theory
Definition
an explanation of a large body of information, experimental and inferential, and serves as an overarching framework for numerous concepts. It is subject to change as new evidence becomes available.
Term
range
Definition
the difference between the highest and the lowest numbers
Term
mean
Definition
the average
Term
accuracy
Definition
measure of closeness to a known standard (i.e. how close you are to the "right" answer)
Term
experimental error
Definition
error in procedure or uncertainty in experimental data
Term
valid
Definition
data that accurately reflects the concept intended to be measured
Term
invalid
Definition
an example of data that does not accurately reflect the concept intended to be measured
Term
reliable
Definition
trustworthy, dependable, data with no experimental error
Term
unreliable
Definition
misleading; data with much experimental error
Term
optimum
Definition
the best or maximum that can be achieved
Term
phenomenon
Definition
any observable occurance
Term
collaboration
Definition
Multiple scientists working together towards the same goal
Term
evidence
Definition
information that tends to prove a fact
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