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What is science?
the study of the natural world
What's the 1st step of the scientific method?
Ask a question/Identify a problem
What is the 2nd step of the scientific method?
Research information and make observations
What is the 3rd step of the scientific method?
develop a hypothesis
What is a hypothesis?
a possible explanation for our observations.
What is special about a hypothesis?
must be testable.
IF...then...because statements
What is the 4th step of the scientific method?
design and conduct an experiment
What are the 3 types of variables in most scientific experiments?
manipulated (independent) variable
responding (dependent) variable
controlled variables
The manipulated (independent) variable...
is the ONE variable scientists change on purpose; the cause
The responding (dependent) variable is...
the variable that responds (changes) as a result; the effect
what we measure
Controlled variables...
are all the remaining variables in an experiment.
What is the 5th step of the scientific method?
collecting and analyzing data
How do scientists analyze data?
through charts, graphs, and data tables
What is the 6th (final) step of the scientific method?
stating a conclusion
A good conclusion...
is a summary statement that tells whether
the data supports the hypothesis
A scientific law is...
a statement that describes what will ALWAYS HAPPEN in nature.
