Week10 Lab/Lecture Description of what we did in the lab? In the lab this week we made rocks! Not really rocks though, fake rocks out of Starburst  We made two kinds of igneous, metamorphic and sedimentary.  I was in charge of the mini flame thrower, probably not a wise decision but I had fun in the process.  Sedimentary rocks are formed by pressure.  I squished one in my hand and Elle stomped on the other.  Metaphoric rocks are formed by heat and pressure.  I melted both and then Alexa squished them in her hands.  Igneous rocks are formed by heating up and then cooling down.  I melted both and we let one cool down by just sitting there and the other we dunked in cool water.  The big question addressed in the lab?  What is the earth made out of? What are the l...