Academic journal article The Science Teacher

Maple Syrup

Academic journal article The Science Teacher

Maple Syrup

Article excerpt

Maple Syrup

By Mike Rechlin.

$24.95. 179 pp. McDonald and Woodward Publishing Company. Granville, OH. 2015. ISBN: 9781935778349.

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No, this isn't a cookbook filled with tasty recipes. This book describes how maple syrup is made, revealing the science behind a "forest treasure."

The author describes six species of maple tree with syrup-producing potential down to their leaf, bud, bark, and seed characteristics. Drawings of leaf features (shape, venation, margins, etc.) and the sizes, shapes, and arrangements of seed clusters help readers learn how to identify the species. Rechlin also explains tree physiology, encompassing root pressure, capillary action, transpiration, osmosis, positive stem pressure, and the source-sink mechanism.

Changing states of matter and energy are used in calculations to determine how much wood fuel is needed to evaporate a specific volume of sap. Another calculation shows how much sap produces a particular volume of syrup. …

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