The big question addressed in lab, and a description of what you did.
In lab, we learned about different kinds of rocks. The activity we did was creating different types of rocks; metamorphic, sedimentary, and igneous. We used starbursts and mixed, molded, and melted them to mimic the types of rocks.
A description of what you learned in Thursday's lecture.
In lecture, we talked about volcanoes and plate tectonics. We learned how oceanic ridges are formed (from magma seeping in between two diverging plates) and about the Mid-Atlantic Ridge. We also learned about converging plates and different kinds of outcomes of converging plates. The next thing we learned was how to date the volcanoes in Hawaii and how we know which islands are older with the knowledge we have of plate motion. Because the other volcanoes are inactive, we know that they are older because they have moved on past the hot spot where the current active volcano is. Another topic was the tectonic plates themselves. We addressed the misconception that the seven continents are the tectonic plate. At the end, we did a brief overview of the rock cycle.
Answer questions about the weekly textbook reading:
What did you learn? I learned that seismic waves from earthquakes travel through the Earth and are refracted due to the inner core being dense. The layers of the Earth (from outermost layer to innermost layer) are called the crust, the mantle, the outer core and the inner core.
What was most helpful? A lot of the diagrams are most useful for understanding hotspots, volcano formation, converging and diverging plates, and laws of superposition.
What do you need more information on? I would like more information on plate tectonics and how much the crust moves. I would like to see a side by side over 50 years to see how much plates have moved.
What questions/concerns/comments do you have? Can two types of plate boundaries occur at the same conncetion?
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