Compare dependent/independent and controlled variables

1.     The variable that the researcher changes or manipulates is called_______

• Controlled variable

• Dependent variable

• Independent variable

• Complex variable

A variable that changes due to the action of another variable is known as ___________

• Controlled variable

• Dependent variable

• Independent variable

• Complex variable

1.     When experimenting with the growth of a plant, a scientist uses three (of the same type of) plants, two different fertilizers, equal light, and equal water. What type of variable is the fertilizer?

• Controlled variable

• Dependent variable

• Independent variable

• Complex variable

1.     Sarah is bringing treats to her elementary school class on her  

birthday. The number of treats she brings in is based on the number of students in her class.

              Which of the variables is independent?

• The number of students

• The number of treats

1.     Carey and Justin are raising money to purchase books for their  

school's library. The more money they raise, the more books they will be able to purchase for the library.

               Which of the variables is dependent?

• The money

• The books

   

1.     How many independent variables can be tested in a controlled

 experiment?

• 1

• 2

• 3

• 4

    The variable that is changed on purpose in an experiment by a scientist

• Controlled variable

• Dependent variable

• Independent variable

• Complex variable

1.     The variable in an experiment that remain the same.

• Controlled variable

• Dependent variable

• Independent variable

• Complex variable

1.     Which of the variables is dependent?_______________

 

• The temperature

• The volume

• The pressure

• The amount of gas

1.     Which of the variables is independent?_______________

• The temperature

• The volume

• The pressure

• The amount of gas