How can you tell if a physical change has occurred in a rock?

Asked Oct 27, 2011
by its shape and size
Answered Oct 27, 2011
Take into consideration, what you want to notice. It would help if you take pictures, measurements, and detailed description of the rock you take. Take into consideration, that recording the dates of these would help.

Say you have a square cube in water, if you measured it today, write it down in a notebook. Take pictures as well, and create a scale of it. A couple weeks later, it may have shrunken down a bit. Measure it then and compare the size in between the two dates.
Answered Oct 27, 2011
"Physical change" can take place in many ways. The evolution of a rock can most often be read by colors and seam lines.
Answered Oct 28, 2011

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