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Chapter 2 Environmental Science
Key Terms for Chapter 2
20
Environmental Studies
Intermediate
08/22/2019

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Term
observations
Definition
a piece of information we gather using our senses
Term
hypothesis
Definition
is a testable idea or explanation that leads to a scientific investigation
Term
prediction
Definition
a logical statement about what will happen if the hypothesis is correct
Term
experiment
Definition
a procedure designed to test a hypothesis under controlled conditions
Term
variable
Definition
the factor of interest
Term
experimental group
Definition
the group in an experiment that receives the variable (factor of interest)
Term
control group
Definition
the group in an experiment that does not receive the variable (factor of interest)
Term
data
Definition
information that scientists gathers "records"
Term
correlation
Definition
associations between two or more events the events are connected somehow
Term
statisitcs
Definition
data collected using numbers
Term
the mean
Definition
this is a number that you get by adding numerical data for a characteristic and dividing this number in half
Term
distribution
Definition
the relative arrangement or the members of a statistical population
Term
probability
Definition
the chance that something will happen
Term
sample
Definition
a group of individuals or events selected to represent the population
Term
risk
Definition
the probability of an unwanted outcome
Term
models
Definition
are representations of objects or systems
Term
conceptual model
Definition
a verbal or graphical explanation of how a system works or is organized
Term
mathematical model
Definition
one or more equations that represents the way a system or process works
Term
values
Definition
principals or standards that affect the environment
Term
decision-making model
Definition
a conceptual model that provides a systematic process for making decisions
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