I am having a misunderstanding about the lab portion of the test. So I am taking it on thursday and my earth science teacher told us we would have to do some rock/mineral i.d.. and measure and calculte the eccentricty of an ellipse and find the epicenter of an earthquake. I was looking through questions on Yahoo Answers and found a lot of people who talked about the same 3 things. However I bought a Barron's Review Book and its talking about 6 labs and you have to find settling time. make a graph. use the plastic hemisphere model, and do all this other stuff. Which one do i Believe? im a little confused.