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Evapo-licious: An Investigation into Evapotranspiration

CSEF · 2011 Plant Biology Honorable_mention Award

Andrew E. Shimshock, Philip S. Zehnder · Central Middle School, San Carlos, San Mateo County

Overview

Objectives/Goals To determine if the number of stomata and surface area have any correlation to the evapotranspiration(ET) rate. Methods/Materials The set-up used included 3 types of plants, USB humidity sensor, dirt, cups and zip-lock bags. Plants were planted in dirt, they were placed in a zip-lock bag with the sensor and it took readings which were graphed on Excel Results The blue fescue had the highest ET rate but the mint had the most surface area. It is believe that fescue would not be the ideal roofing material do to its low surface area. Mint would be the most ideal because of its high surface area and number of stomata. Conclusions/Discussion At first it was thought that the mint was going to transpire the most due to its high surface area and dense leaf structure. After tests we found that the fescue had the highest rate of transpiration.

Summary statement

An investigation into evapotranspiration

Help received

A college professor helped with experimental set up; Dad helped us use an electron microscope. Mom helped with editing.

Awards (1)

  • Honorable Mention

Competition history

  • CSEF 2011 Plant Biology · Entry J1934

Resources

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