Rock #4

Explain what the viewer is looking at in the picture, and how buoyancy/isostasy is involved.  Is the object mostly submerged or mostly above the surface of the fluid?  What does the level at which the object floats in the fluid tell us about the relative densities of the object and fluid?

 This rock was found in Morro Bay Beach on Sunday April, 27th, about half way in sand near the water. Its strange shape and black matted coloring caught my eye in the brown sand. I was surprised about how heavy the small rock, about the size of an apricot, was. I am honestly not too sure what the rock was doing at the beach, because it is not a common rock found on the waterline. However, I believe that it had not been there for a long time due to its sharper edges. I think that it has not had too much weathering that has smoothed out its edges.









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