WED: Rocking Our World

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Status: Finished  |  Genre: Non-Fiction  |  House: Booksie Classic


Weathering Eroding Depositing WED! And now, do your own WED experiments!

Submitted: October 03, 2017

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Submitted: October 03, 2017

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Simple Weathering, Erosion, and Deposition

Experiments!

By Vee Kay Aech

 

In class, we did several experiments designed to demonstrate weathering, erosion, and deposition. These experiments were safe and the necessary materials are very common. In fact, you can grab almost every material in your backyard.

To start off, we showed off weathering and erosion. We used straws to mimic the wind and dirt as mock mountains. Then, we held the straws up to our mouths, blowing away the dirt. This would be in comparison with the wind wearing down the mountain (called weathering) and carrying off the remaining sediment (called erosion). Note that these changes are quite fast as compared to the speed nature takes to do this; for a mountain such as K2, it would literally take at least four hundred million years since it was born for it to totally be brought down to ground. In this experiment, you can do it in no more than ten minutes.

Next, we experimented how different states of water would make a chalk-like rock weather and erode. The rock can easily be substituted by chalk. We first tried ice. The gradual melting of the ice made it very good at weathering, but it did not score well with erosion, deepening the small channel with the same speed that it melted. Our next (and final) participant was: liquid water. It did not weather the rock well, but what it did weather was very well eroded.

Our final experiment was the most realistic. On one side, there was a lot of dirt. Close, clean water lied still in a plastic tub. When our teacher created a tsunami (tidal/harbor wave), a lot of the sand was eroded and carried out into the sea (or into the water that was used to represent the sea). After many, many tsunamis (I’m sure the imaginary people living by the beach [what the dirt represented] were devastated), a sandbar (or shoal) stretched throughout the sea.

As you can observe, our experiments were: simple, realistic, and effective.

 


© Copyright 2018 Vee Kay Aech. All rights reserved.

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