Exam (elaborations)
BIO 130M Introduction to Environmental Science Understanding_Experimental_Design_lab_Worksheet__Simploids
- Institution
- Arizona State University
BIO 130M Introduction to Environmental Science
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Section 1: What makes a good experiment?Introduction to the Plight of the Simploids
Many are shriveling up and even dying. The population of Idyllic is very sad to lose their
Simploids.
They have proposed 3 hypotheses about what is happening to the Simploids. Record them
here for future reference. Hint: you have to watch the video.
1. ___________Shamworms_________________________________________________
______Change in temperature____
2. _____The sales of ZapWeed
_________________________________________________________________
3. ______________________________________________________________________
How Science Really Works diagram
Testing ideas can lead to (and these lead back to testing ideas)?
1. ______________________________________________________________________
2. ______________________________________________________________________
3. ______________________________________________________________________
Under which heading/box is “gathering & interpreting data”? ____________________________
Well-Designed Experiments
What is difference between observational studies (such as the example given that people who
eat Mediterranean diets live longer) and well-designed experimental studies? Can
observational studies demonstrate cause and effect?
Components of well-designed experiments:
1. Independent or treatment variable that you manipulate. The two categories of
treatment include;
1. experimental group that experiences the proposed treatment, and
2. control group that does not experience the effect of the treatment so that you
can compare the experimental group to the control group to determine effect of
the treatment.
b. Potentially confounding variables must be kept constant between groups
1. For example, if you were testing the effect of the Mediterranean diet, you would
need to make sure both groups received the same amount of exercise, sunlight,
work conditions, etc., as these could be confounding variables.
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