Skittles Erosion Experiment

Skittles Erosion Experiment.

You need 3 plastic cups, 3 skittle sweets and water.


Fill 2 cups half full of water and leave 1 cup empty of water.
Put one sweet in each cup.
Swirl one cup round in circular movements for 15 seconds every 5 minutes for up to an hour. Observe any changes.

Discuss what is happening to the sweets and how this relates to weathering and erosion of the coastline by the sea.

What has happened to the sweets?
Why is this happening?
What effect does the water have on the sweet?
What effect does the movement of the water have on the sweet?
What has happened to the sweet without water?

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