15 terms

Biology: Unit 1.1 - The Scientific Method and Experimental Design

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Science
process used to answer questions about the natural world
Observation
using our senses (sight, smell, hearing, etc.) or other tools (e.g., cameras, computers) to study the world around us
Data
information obtained in an experiment that can be analyzed; could be quantitative or qualitative
Quantitative Data
type of data that includes numerical measurements
Qualitative Data
type of data that involves descriptions in words of what is being observed, often based on using your senses
Scientific Method
series of steps that scientists use to answer questions and/or solve problems
Hypothesis
a prediction or "educated guess" about what the answer to a question or outcome of an experiment might be
Experiment
a scientific procedure used to answer a question or test a hypothesis
Error
a factor that could cause experimental data to be off or different from what is expected
Independent Variable
the variable in an experiment that is manipulated or changed by the experimenter
Dependent Variable
the responding variable in an experiment; this is what changes due to the effects of the independent variable
Control Group
baseline situation used to compare to results of the experimental group
Experimental Group
identical to the control group except for one factor/variable that is changed; receives the independent variable
Constant
factors in an experiment that do not change or are the same between control and experimental groups
Theory
an explanation that is based on repeated observation and experimentation and has lots of supporting evidence
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