Exam 2: Plate Tectonics: A Unifying Theory

Paleomagnetism is the study of the ____________________ magnetism in rocks.When magma cools,the magnetic iron-bearing minerals align themselves with the Earth's magnetic field and record ____________________ and ____________________.

Plate tectonic processes have influenced:

How does the introduction of a geographic barrier encourage the evolution of species?

Studies of paleomagnetism document:

List two ways that glacial deposits give strong evidence of the existence of Gondwana.

The physical phenomenon that results from the spin of electrons that is found in some solids,particularly iron,and moving electricity is known as ____________________.The zone around substances with this property is called a ____________________.

Fossil evidence of the links among Gondwana continents was compelling because the species should have:

Explain why submarine hydrothermal vents are interesting to scientists.

What are the three possible explanations for the distribution of paleomagnetic data?

Draw a cross-section of an oceanic-continental convergent plate boundary.Show the directions of relative plate motion.Put stars for the locations of earthquakes.Put triangles with smoke out the top for the locations of volcanoes.Label the trench and subduction complex.