Week 11: Superposition

1. The big question addressed in lab, and a description of what you did.
1. In lab, we started out by being shown a picture of rocks and had to determine what rocks came first. We worked through that picture as a class. The rocks follow the law of superposition, which means that the rocks at the bottom are the oldest and the rocks at the top are the youngest. We then focused on sand and looking at them through a microscope. It was interesting because all of the sand was different from each other. We were able to place the sand in the communities that they belonged. To conclude class, we discussed Archimedes principle and water displacement and looked at Geodes to try and see which geodes would be hallow inside and which geodes would be solid inside.
2. A description of what you learned in Thursday's lecture.
1. In lecture we discussed more in detail about the rock cycle. We also went into detail about erosion --> wind erosion, water erosion, and glacier erosion. We finished class by drawing out the rock cycle and talking through what types of things can influence the types of rocks.
3. Answer questions about the weekly textbook reading:
   1. What did you learn?
   1. I learned about how a geode get formed. I also learned about Archimedes' Principle and that a less dense geode will have more crystals inside (the ones that you see cut open).  Archimedes' principle says the weight of the displaced liquid is equal to the weight of the object. I also learned about the different types of weathering, erosion, and deposition. Weathering is the making the mess and erosion is cleaning it up.
   2. What was most helpful?
   1. The table at the top of the reading was helpful to me in finding the characteristics of types of rocks.
   3. What do you need more information on?
   1. I would like more information on how to calculate Archimedes' principle.
   4. What questions/concerns/comments do you have?
   1. I am concerned about creating the rock cycle on my own.