Hi! My name is Ms. McCullagh. I will continue to post nature related photos and videos on this great outlet - thank you, Earthwatch! I traveled with Earthwatch to Maryland to study Climate Change and Fragmented Forests at the Smithsonian Environmental Research Center.

Monday, November 30, 2009

Measuring the diameter of trees without cutting...


Today, we learned how to measure tree diameter without cutting them...you knew Math would be part of the science, right?

Lucky for us, the SERC team use special tape measures that convert the circumference measurement in centimeters into diameter measurements in millimeters! This saves the tree being cut, and saves us from having to use a slide rule (!) or calculator to determine the values...

Your Challenge: Can you devise the equation to accomplish such a conversion? If the tree measured 93.9 mm in diameter (according to the special tape) what is the tree's circumference?

A special prize and a "shout out" on the blog will go to the first correct answer!

One of the main research questions deals with carbon storage in the biomass of the forest's trees, and leaves are valuable for the scientists' calculations. So, tomorrow, we expect to travel deep into the research are to collect the leaf litter.

Till then, take a look at the video, photos, and challenges I have posted for you...are you keeping up?

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At November 30, 2009 at 7:01 PM , OpenID RMSRC said...

Hi Ms. McCullagh,
It's Roly. I don't know if it's different because of the special tape but isn't the circumference just the diameter times 3.14? The circumference would be 294.8 mm.


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