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Plants are indicators of the quality of the local environment that impacts all living creatures in the area. We just need to know how to examine plants to be able to read their signs of an unhealthy environment and be able to identify the causes of the problems.

The following investigations are designed to show the basic plant processes, the many ways plants respond to their environment, and how we can monitor plant health using growth characteristics and proportions of different wavelengths of light reflecting from their leaves.

Plants and Scale

Plants and Time


Plant Challenge – Do Plants Grow at Night?
Plant Challenge – What is the Area of This Leaf?
Plant Challenge – How Long are these Pine Needles?
Plant Challenge – How Tall is the Tree?
Plant Challenge – What is the Tree's Diameter?
Plant Challenge – How Dense is the Tree Canopy?

Back to Investigation Overview

See Plant and Soil Sciences eLibrary
for more in-depth material on plants and soils.

Image of a banana leaf

Image of trees