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10 Cards in this Set
- Front
- Back
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What are the overall steps of the scientific method? |
Observe and create questions to develop a hypothesis, test the hypothesis (do experiment), assign variables, then repeat experiment after modifying hypothesis. |
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What is a null hypothesis? |
Null hypothesis states that the experiment and control have no relation. We usually want to reject the null hypothesis. |
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What is an alternate hypothesis? |
If null hypothesis is rejected, then you fail to reject the alternate hypothesis which takes into account the relationship and effects between the treatment and experiment. |
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Independent Variable |
The manipulated variable; something you change throughout a lab. For example, adding 2mL of HCl to each treatment in an experiment. |
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Dependent Variable |
The responding variable; the result of manipulating variables. For example, after adding 2mL of HCl to each treatment (manipulation), the pH of the solution decreased (result= dependent variable). |
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What is an experimental treatment? |
Looking at the effect of independent variable on the dependent variable. |
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Control treatment |
Possible effects of other factors on dependent variable other than solely the independent's effect on dependent. |
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Constants |
Keeping certain factors the same among various treatment groups. For ex, all groups would be the same age. |
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Why do we create tables and graphs? |
To compare results of experiment and summarize the results. |
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