Exam 2: Plate Tectonics: The Unifying Theory

__________ was the first earth scientist to propose a rudimentary form of seafloor spreading.

Which type of measurements are currently used determine the rate of plate movement with a high degree of accuracy?

Deep focus earthquakes are typically associated with which type of plate boundary?

Which of the following is associated with a divergent plate boundary?

In which ocean are most of the world's convergent plate margins located?

Which of the following is a divergent plate boundary?

The oldest continental rocks are __________ than the oldest oceanic rocks.

The Appalachian Mountains formed from an ancient ____________ plate boundary.

New oceanic crust is created at

The Hawaiian volcanoes are

Who first suggested that the Earth's surface might be a fragile shell resting on fluid?

Which scientist was the first to suggest the existence of so-called "supercontinents"?

The North American Plate is bounded on the west with _____ boundaries and the east with ___ boundaries.

Which of the following can be used to determine the rates of plate motion?

What plate is subducting beneath southwestern Canada and the northwestern United States?

Which of the following concepts was developed earliest?

Geoscientists predict the east coast of North America will be _____________ 50 million years in the future.

What ocean used to lie between Africa and Eurasia and was the ancestor to today's Mediterranean Sea?

The North American Plate is bounded by ______ plate boundaries.

What kind of plate boundary defines the eastern edge of the plate we live on in the United States?