Chapter 13 Plate Tectonics Review Questions
Explain the theory of continental drift. Who developed it, when, what was it about?
What was the evidence used to support the theory of continental drift?
What layers of the earth make up the lithosphere?
What layers of the earth make up the asthenosphere?
What layers of the earth make up the plates?
What was one of the controversies challenging the theory of continental drift? How was this challenge overruled?
What type of crust (oceanic, continental) make up the North American Plate?
What type of crust (oceanic, continental) make up the Pacific Plate?
What are plate boundaries? What is occurring there?
What are the different types of plate boundaries? Be able to describe what is occurring at each, and give one example of where this is happening.
What type (depth) of earthquakes occur at subduction boundaries? (Think about your lab.)
The volcanoes of the Andes Mountains, as well as Mount St. Helens and Mt. Rainier are volcanoes associated with what type of plate boundary?
Describe the relationship between age of the volcanic rock and the distance from the spreading center.
Why would seafloor always be younger than continents?
What is the difference in density between the continental crust and the oceanic crust: What is the significance of this?
What is the relationship between the spreading centers and the deep ocean trenches?
Ocean floor is continuously being made where?
What type of feature are the mid-ocean ridges? Can this same feature be found outside on an ocean?
What is the mechanism behind movement of the plates?