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19 Cards in this Set
- Front
- Back
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What is the scientific method?
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An organized set of investigation procedures: state the problem
gather information form a hypothesis test the hypothesis analyze data draw conclusions |
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What is a hypothesis?
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a possible explanation for a problem using what you know and what you observe
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define experiment
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tests the effect of one thing on another using controlled conditions
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define variable
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a quantity that can have more than a single value
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define dependent variable. what axis is it on?
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its value changes according to the changes in the other variables; y-axis
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define independent variable. what axis is it on?
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the variable you change to see how it will affect the dependent variable; x-axis
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define constant
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a factor that does not change when other variables change
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define control
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the standard by which the test results can be compared
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define bias
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occurs when what the scientist expects changes how the results are viewed
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define model
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represents an idea, event, or object to help people better understand it
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define theory.
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an explanation of things or events based on knowledge gained from many observations and investigations
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define scientific law.
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a statement about what happens in nature and that seems to be true all the time
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define technology.
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the application of science to help people
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define standard
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is an exact quantity that people agree to use to compare measurements
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define SI
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international system of units; standards universally accepted and understood by scientists throughout the world
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define volume
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amount of space occupied by an object; v=m/D
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define mass
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a measurement of the quantity of matter in an object; m=Dv
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define density
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the mass per unit volume of a material; D=m/v
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define graph
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a visual display of information or data
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