Scientists are studying a group of living cells under a microscope. They write down notes about the size, shape, and color of the cells as well as other traits.Which best describes this type of investigation?
Answer
A
comparative, because the scientists will be making observations in order to form a hypothesis
B
comparative, because the scientists are measuring dependent and independent variables
C
descriptive, because the scientists are using independent variables to test a hypothesis
D
descriptive, because the scientists are writing down observations but not making comparisons
Explanation
This is a descriptive investigation because the scientists are recording characteristics they observe, such as cell size, shape, and color. They are not changing a factor to test its effect, so they are not working with independent and dependent variables. Choice D correctly describes recording observations without making comparisons.
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