A student adds different amounts of ice to four samples of water and records the change in temperature after 30 minutes. What is the independent variable in this investigation?(1 point) Responses initial temperature initial temperature final temperature final temperature amount of time amount of time ice cubes added

The independent variable in this investigation is the "amount of ice cubes added." This is the variable that the student is intentionally changing to observe its effect on the temperature of the water samples.

The answer is amount of ice cubes added. This is the independent variable that is being manipulated in the experiment to observe its effect on the temperature change of the water samples.