Exam 2: Internal Structure of the Earth and Plate Tectonics

Using concepts from plate tectonic theory, describe an area that should have many different types of geologic hazards and an area that should have few geologic hazards. NOTE: You do not have to give a specific geographic location, just give the general characteristics in terms of plate tectonic theory.

Magnetic reversals have happened throughout most of the Earth's history. Explain how these magnetic reversals have been used as evidence for Seafloor Spreading.

Tectonic plates move completely continuously at speeds of several centimeters per year.

Which of the following hazards would you expect to see at a transform plate boundary?

Reversals of the earth's magnetic polarity

What would you NOT expect to see at locations where tectonic plates are sinking?

Marine magnetic anomalies are now known to have developed because

Which of the following is the correct order of the layers of the Earth from inside to outside?

Which of the following best describes the internal structure of the earth?

The geographic distribution of the Mesosaurus, a small swimming reptile that lived during the late Paleozoic, shows that the reptile lived on the southwest coast of what is now Africa and the southeast coast of what is now South America. This provides evidence that