scientific investigation
1) scientific question: a defined and testable occurrence with elements that can be controlled and measured.
2)hypothesis: is a testable explanation or answer for the scientific question that can be proved false.
how to test a hypothesis?
- by a controlled experiment.
- by accumulating data
a controlled experiment includes:
Defining variables
Outlining a procedure: a sequence of steps.
Determining controls
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1- Dependent variable: an observation in response to experimental conditions.
2- Independent variable: is the variable that can be controlled by the experimenter.
3- controlled variables: factors other than the independent variable that might affect the dependent.
level of treatment
replication
control
4) making prediction: if the hypothesis is supported, then the results of the experiment will be.......
5) presenting and analyzing results:
tables
figures