metric measurements for "how well do disinfectants work"

julie389 · Post by **julie389** » Tue Nov 12, 2013 10:16 pm

We received a note from my daughter's teacher asking how we would measure using the metric system. Other than the amount of disinfectant we use what would we measure??

deleted-71536 · Post by **deleted-71536** » Wed Nov 13, 2013 9:05 am

Hello,

I think you are doing this excellent Science Buddies project: https://www.sciencebuddies.org/science- ... p012.shtml

In terms of measurements, your dependent variable is the number of bacterial colonies, which is not a metric measurement but it perfectly valid. You are correct in saying you will measure the amount of disinfectant. This can happen two ways: (1) volume (milliliters or liters) and (2) concentration. Measuring volume in milliliters or liters would be a good use of the metric system.

I hope this helps. Please post again (in this same thread) if you have more questions.

Heather

metric measurements for "how well do disinfectants work"

metric measurements for "how well do disinfectants work"

Re: metric measurements for "how well do disinfectants work"