Home > Science Experiments > Annual Growth - Experiment 2 - Lichen Growth: What can be learned from the environment by observing lichens?

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Experiment 2
Lichen Growth: What can be learned from the environment by observing lichens?

Purpose/Hypothesis

For this experiment, you will need to locate different lichens in various habitats around your school and/or home. Counting and measuring the number of lichens you find growing in different areas will give you a rough idea of the amounts of air pollution present. Lichens are nearly everywhere. You will need, however, to find samples large enough to examine and measure. In rural environments, this should not be difficult. Lichens can frequently be found on trees, dead wood, and rocks. Before you begin, make an educated guess about the out-come of this experiment based on your knowledge of lichens. This educated guess, or prediction, is your hypothesisAn idea in the form of a statement that can...

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1. Introduction
2. How does a tree grow?
3. Lichens: another kind of annual growth
4. Lichens can survive harsh environments
5. Experiment 1 - Tree Growth: What can be learned from the growth patterns of trees?
6. Experiment 2 - Lichen Growth: What can be learned from the environment by observing lichens?
7. Design Your Own Experiment