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The Nature of Science
Unit I review
14
Biology
10th Grade
09/24/2007

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Term
Name the characteristics of a scientific explanation.
Definition
-based on emprirical evidence (1st hand evidence)
-are testable
-are open to change (excepted valid, until it can't past a test)
-are made public (data + conclusions are evaluated by the scientific community)
Term
Define what the Experimental Group is.
Definition
-The group where you change the independent variable
-Tests the hypothesis
Term
Define what the Control Group is.
Definition
-The group where NO variables are changed
-Use this as a comparison to see it changing the independent variable did anything
-"Normal Conditions"- don't expect to see change
Term
Define what the Independent Variable is.
Definition
-The variable you decide to change- the test variable
-You think changing this will test the hypothesis
Term
Define what the Dependent Variable is.
Definition
-The change measured
-You expect this to change because you changed the independent variable ("depends" on the independent variable)
Term
Define what the Unchanged Variables (constants) are.
Definition
-Variables that are kept the same in both experimental and control groups throughout the experiment
-Do this to try and make sure the change observed is do to the change in the independent variable
Term
Define Observation.
Definition
Observations are what you see infront of you.
Term
Define Inference.
Definition
Inference is when you use past knowledge to assume something.
Term
List a few key lab safety rules.
Definition
NO FOOLING AROUND, wear safety materials if neccessary, etc
Term
Define Empirical Evidence.
Definition
First hand evidence
Term
Define Hypothesis.
Definition
An educated guess about what you think is going to happen.
Term
Define Experiment.
Definition
Something you do to prove your hypothesis is correct or incorrect/ test a question.
Term
Define theory and explain why theories form the framework of science.
Definition
Something that is tested multiple times to be proven correct or incorrect and is approved by the public science community.
Because theories prove thoughts true
Because theories are tested questions that have held up to multiple tests; and therefore are seen as correct in the science community. And the form the framework of science because theories are what everything is made of.
Term
Describe the importance of using control variables in testing hypotheses.
Definition
Use control variables because it helps you compare it to the changed variables.
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