Question

in an experiment, a student

• built four identical cube - shaped containers
• insulated the top, bottom, and sides of each container with one of four different materials
• recorded the initial temperature of the air inside each container
• placed the containers in the sun for 15 minutes
• recorded the final temperature of the air inside each container

types of variables
1 manipulated (independent) variable
2 responding (dependent) variable
3 controlled variable
numerical response

1. match the three types of variables numbered above with the part or parts of th experiment to which they apply, as described below. you may use numbers more than once.

type of insulating material used in each container —— (record in the first column)
length of time each container was placed in the sun —— (record in the second column)
final temperature of air inside the container —— (record in the third column)
size of each container —— (record in the fourth column)
(record your answer in the numerical - response section on the answer sheet.)

Explanation:

Step1: Identify independent variable

The manipulated (independent) variable is what is changed in the experiment. Here, the type of insulating material is changed, so it is \(1\).

Step2: Identify dependent variable

The responding (dependent) variable is what is measured as a result. The final temperature of the air inside the container is measured based on the insulating material, so it is \(2\).

Step3: Identify controlled variables

Controlled variables are kept the same. The length of time each container was placed in the sun (\(3\)) and the size of each container (\(3\)) are kept the same.

Answer:

\(1\), \(3\), \(2\), \(3\)