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Scientific Invest.7

biology

QuestionAnswer
Why do scientist ask many questions? to help them understand living systems
What do you have to do to answer biologists questions? need to collect evidence through scientific investigations.
scientific investigations have five basic steps: Forming Hypothesis,testing hypothesis,Collect data,Interpret data,Communicate results.
Where do questions of biologists come from? observations of the natural world
hypothesis- is a possible explanation for a set of observations or a possible answer to a scientific question
What do scientists design to test hypothesis? experiments
What are factors that can change in an experiment? variables
Controlled experiment- An experiment in which only one variable is changed at a time.
In gathering data many observations involve the senses of sight, hearing, touch, and smell
What do scientists use to organize, interpret, and present data? tables, charts, and graphs
Why do scientists analyze and interpret data tables and graphs? to determine the relationship of one variable to another and to make predictions based on the data
How does communiticating results of an experiment help scientists? helps scientist learn from one another.
What are investigations designed for? to test a hypothesis
manipulated variables- variable that is purposely changed to test a hypothesis
What else are manipulated variables sometimes called? independent variables
responding variable factor that may change in response to the manipulated variable
What are responding variables sometimes called? dependent variables
controlled variables or constants- All of the other variables or factors, besides the manipulated and responding variables
Whata are tables and graphs used for? organize and present information.
Created by: ericreyes
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