easy · Enhanced ACT science
A student tests the strength of different brands of paper towels by measuring how much water each can hold before breaking. She uses a 10 cm square of each brand and adds water drop by drop.
What is the independent variable?
- The specific brand of paper towel tested
- The rate of adding water (drop by drop)
- The 10 cm square size of the towel
- The total volume of water held at failure
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