Question

Please, someone can help me with the question #3, because somebody says that answer is incorrect. Thanks

Answer 1

Your multiple choice answers seem to be correct. However, I think you should reevaluate the third question and rewrite it.

Answer 2

Okay, so it's really just issues with wording.

What Lauren did right in the experiment was that she wrote down the results of each experiment. What she could have done better would be to test the new batteries on both new and old flashlights twice, or she could have used only new flashlights.

Answer 3

Let me know if that helped. @blanca1

Answer 4

The problem with her experiment is that she's changing a constant variable. As far as I remember, they wanted to put the batteries against each other and see which one lasted the longest. The flashlights are supposed to be a constant variable, they're not supposed to change. The old flashlights added unnecessary stress.

Answer 5

The variable is the location of the flashlights as well, She would have had to use new batteries and new flashlights. Using the same flashlights does add a variable as well as the location and age of the flashlights. Also record location of all three flashlights while batteries are running down and make sure same make and model as the ones she used in her first experiment But agree with Chatreuse , need a constant variable.

Answer 6

Thanks Chatreuse, TH3 MONST3R and jeepgirl for your help