Exam 2: Internal Structure of the Earth and Plate Tectonics

Explain the importance of Paleomagnetism in understanding plate tectonics.

Describe the theory of continental drift and explain how it relates to plate tectonics.

Which tectonic plate setting is associated with the following features: light to moderate earthquakes; nonexplosive volcanic eruptions; new oceanic lithosphere produced? Mid-Atlantic Ridge is a geographic example.

During subduction, one plate sinks under another tectonic plate.

The Cascade Region of northwestern U.S. is home to a subduction zone. Describe the hazards that can occur in this area. For each hazard, explain how the hazards are caused in the subduction zone.

The Hawaiian Islands are an example of

Which tectonic plate boundary is associated with the following features: major earthquakes; no volcanoes; large and high mountain chain is formed? Himalayan Mountains are a geographic example.

Which tectonic plate setting is associated with the following features: great earthquakes; explosive volcanic eruptions; oceanic plate sinks into mantle and remelts? Andes Mountains are a geographic example.

The oldest ocean crust will tend to occur at the greatest distances from the mid-ocean ridge.

Which of the following hazards would you expect to see at a convergent plate boundary associated with a subduction zone?

Triple junctions are where three tectonic plates border each other.

The mantle is a layer of molten iron metal that surrounds the solid inner core.

Which statement about the hotspot at Hawaii is FALSE?

Where are earthquakes usually the LEAST common?

The asthenosphere layer of the Earth is completely liquid.

Give a description of the lithosphere, crust, asthenosphere, and mantle and explain the relationships between them.

Describe the mechanisms of ridge-push and Slab-pull and explain which one is the more important process in driving plate tectonics.

What does paleomagnetism study?

The Earth is composed of layers that have different properties.

Reconstructing all of the continents into a single supercontinent called Pangaea helps to explain better evidence of ancient glaciation on several continents, especially in terms of ice flow directions.