Rock Tumbler Abrasion Lab

In this activity students are going to find a small rock, decide what rock type it is, weight it, place it in a tumbler and then over a two week period observe it to see how much mass a rock can lose if it went through a 24 hour a day process of bouncing around other rocks. Students will get a first-hand look at the power behind water and abrasion. Students will make a statement of conclusion and calculate the rate of mass decrease.

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