Question

the passage below describes an experiment. read the passage and think about the variables that are described. hakim designed an electric circuit to test how well different types of metal conduct electricity. the circuit included a battery, a light bulb, wires, and clips that could be attached to a sheet of metal. if the metal conducted electricity poorly, the light bulb would appear dim. if the metal conducted electricity well, the light bulb would appear bright. hakim collected nine equally sized sheets of metal: three sheets of copper, three sheets of iron, and three sheets of aluminum. he used the clips to attach each metal sheet, one sheet at a time, to the circuit. for each sheet, hakim used a light meter to measure how much light the bulb produced. which of the following was an independent variable in this experiment? hint: an independent variable is a variable whose effect you are investigating. a dependent variable is a variable that you measure. the amount of light produced by the light bulb the type of metal sheet used in the circuit

Explanation:

An independent variable is what is changed in an experiment to observe its effect on the dependent variable. Here, Hakim changes the type of metal sheet to see how it affects the amount of light the bulb produces. The amount of light is the dependent variable as it is being measured.

Answer:

the type of metal sheet used in the circuit