CMST Erosion experiment

Lívia Villínová, Alžbeta Krúpová CMST, Diffusion, Erasmus+, Slovakia …

21 juin 2023

The students of the ninth grade focused on the study of water and wind soil erosion in the biology lesson within the thematic unit External geological processes. Through three designed experiments, they observed the impact of water and wind erosion on the soil. After the preparation and implementation of the experiments, the students discussed the results and tried to justify these results and give examples of how it would be possible to protect the soil from erosion.

Using artificially created rain, they observed how the soil, which is more stony compared to sandy soil, would behave. With this task, they demonstrated how rainwater affects the shape of mountains.

In the second task, they observed how rain and river water can affect the soil. They investigated how the plowing method affects the speed of water flowing through agricultural land. They discussed which method of plowing land on a slope is more advantageous for farmers and what effect damming the gullies created by running water would have.

Finally, they checked the effect of wind on different types of soil - grass, stony and sandy. After finding that sandy soil is most affected by wind erosion, they discussed how wind erosion on such soil could be mitigated.

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