What is the independent variable?
1 is that the correct answer help plz
Sue is setting up an experiment to test whether fly maggots select a dark or a brightly lit environment. She sets up a chamber in which there is a gradient in light intensity from one end (dark) to the other (brightly lit).
The experimental hypothesis was
“There will be a large difference between the number of maggots in a dark environment and the number in a brightly illuminated one.”
What is the independent variable? Select one option from the list below.
1) Light intensity
2) The reaction rate of maggots
3) The average number of maggots in each light condition
4) The total number of maggots
5) The number of maggots in each light condition
6) The distance between the darkest and most brightly lit parts of the choice chamber
7) The time of day
To determine the independent variable in this experiment, we need to identify the factor that is deliberately manipulated or controlled by the researcher. In this case, the independent variable is the factor that Sue is testing to see if it has an effect on the number of maggots in a dark or a brightly lit environment.
From the given options, the independent variable is:
1) Light intensity
Sue is manipulating the light intensity within the chamber to create a gradient from dark to brightly lit. By doing so, she can observe how the light intensity affects the distribution of maggots in different light conditions.