It is January and Haley, Sarah and Becky are tired of having cold feet while waiting for the school bus to come in the morning.
They decide to design an experiment to test the effectiveness of wool, cotton and nylon as insulators. They fill identical bottles with 200 ml of water at 100 C and place inside each sock. They take the temperature of the water after 20 minutes. What is the Independent variable (manipulated variable) in the following experiment?
Question 2 options:
Identical bottles with 200 ml of water.
The different types of sock materials as insulators.
The independent variable in the given experiment is the usage of different kinds of sock materials as insulators.
Explanation:
An experiment comprises two prime variables in an experiment, these are the dependent and the independent variables. A variable, that is, examined or amended in a scientific test to inspect the effects on the dependent variable is known as an independent variable. In the given case, the use of different kinds of socks, that is, nylon, wool, and cotton as insulators is considered as the independent variable in the given experiment.
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