Question

Michelle was cooking a pizza and removed the pizza from the oven which was set to 204 degree Celsius. She wanted to cool down the pizza as soon as possible to eat it. In her house she had a freezer (-18 degree Celsius) a refrigerator (4 degree Celsius) a countertop (room temperature) WHAT IS THE INDEPENDENT, DEPENDENT AND CONTROLLED VARIABLE?

Answer 1

Independent variables are the devices.

The Dependent variable is the rate of cooling.

There is no controlled variable.

Step-by-step explanation:

Independent variable is required to be changed to observe its impact on the dependent variable. The controlled variable is kept as a standard for experimentation process.

Independent variable are the temperatures of different devices which were used to cool down the pizza.

Dependent variable is the rate of cooling of the pizza.

Controlled variables: No control variables are set in this experiment.

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