Measuring glucose in food and drinks

[dariyahcarterrrr]

I was wondering what the independent, dependent, and control is for my project.

Moderator (project url?): https://www.sciencebuddies.org/science- ... se-in-food

[LeirD]

Hi!

It seems like your project is about measuring the amount of glucose in different fruits/juices. Your independent variable is always the thing that you, the experimenter, are directly choosing to change. So, in this case, the type of fruit/juice would be the independent variable. Your dependent variable is the thing that changes because of the independent variable. In this case, the dependent variable is the amount of glucose in each solution (the glucose concentration %). Finally, the control variable is a variable in an experiment that could be changed, but isn't in the specific variable being targeted. So for you, the control variable could be the type of solute that you use, or even something like the types of fruits you use (for example, if you only wanted to test red fruits, the color of the fruit would be controlled, thus it is a control variable). Note that the project url uses the labels of "positive and negative controls" these are not the control variables I'm talking about. Instead, the positive and negative controls from the url are really about testing your strips so you understand what colors correspond to different concentration levels.

One other idea for an independent variable could be to use the same fruit (like an apple or orange) but vary the origin of the fruit; for example an orange from florida versus california (or even mexico).

Hope this helps!

[MadelineB]

Adding to the useful info provided by the expert in the previous post, here's a helpful discussion that is provided by the very helpful Science Buddies Project Guides:

https://www.sciencebuddies.org/science- ... s-beginner

Best of luck with your science project!
Madeline