Problem 3
Some predict that California will sink into the ocean. Is this idea consistent with the theory of plate tectonics? Explain.
Problem 5
Volcanoes, such as the Hawaian chain, that form over mantle plumes are some of the largest shield volcanoes on Earth. However, several shield volcanoes on Mars are gigantic compared to those on Earth. What does this difference tell us about the role of plate motion in shaping the Martian surface?
Problem 7
Australian marsupials (kangaroos, koala bears, etc.) have direct fos: links to marsupial opossums found in the Americas. Yet the moder marsupials in Australia are markedly different from their Americar relatives. How does the breakup of Pangaea help to explain these differences?
Problem 8
Density is a key component in the behavior of Earth materials and is especially important in understanding key aspects of plate tectonics. Describe three different ways that density and/or density differences play a role in plate tectonics.
