Marano- Scientic Method
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| When a scientist is trying to answer a question, he/she will often conduct an _____. | experiment
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| the correct procedures followed when conducting an experiment | scientific method
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| Steps of the scientific methods are | 1. identify the problem 2. research 3. create a hypothesis 4. experiment 5. make observations 6. make conclusions 7. accept, reject or change hypothesis 8. comumunicate results
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| hypothesis | educated guess
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| How should you word a hypothesis? | If (I do this), then (this will happen) because research says this...
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| variables | factors, conditions, and/or relationships that can change or be changed in an experiment
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| manipulated variable | the variable the scientist chooses to make different
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| manipulated variable | independent
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| responding variable | dependent
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| responding variable | the variable that is forced to change because the manipulated variable has changed
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| controlled variable | everything that is not changed
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| control group | nothing is changed, you have something to compare changes to
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| Writing a good hypothesis | If (manipulated variable changes), then (responding variable will) because research says...
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| Operational definition | describes how a measurement will be made
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| observations | collecting data with one or more senses
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| quantitative observations | observations that may require use of scientific tool (numbers)
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| qualitative observations | observations not based on numbers
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| data tables must have ______ | titles and labels
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| In a data table columns represent the different _____. | variables
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| LIne graphs must have a _____. | title
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| Each axis on a line graph represents a ______ and should include ______. | variable, labels
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| Which variable is put on the x axis? | manipulated
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| Which variable is put on the y axis? | responding
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| Not all graphs start at _____ | zero
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| When making a line graph, do not connect the line to the ______ unless it was part of the collected data | origin
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| Each line must jump by the (same, different) value. | same
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| trend lines | line drawn that is the average of the data, plotted points above and below the line
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| interpolation | if the question is based on data that you did not receive, but you have the data for above and below the question, you could use the average of the two data points
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| extrapolation | when asked a question which is beyond your data, if there is a trend to your data, follow this trend to find your answer
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| Inferences | explanations of observations based on observations and past experience
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| Inferences can change based on ______ | further observations
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| Why should a good experiment be done several times? | to show that the data collected does not change
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