Plate Tectonics & Earth's Structure

Which of the following describes the theory of continental drift?

• Proposed by Albert Einstein, this theory states that all the oceans were joined as one

• Proposed by Albert Einstein, this theory states that all continents were joined as one, called Pangea

• Proposed by Alfred Wegener, this theory states that all the oceans and continents were joined as one, called Rodinia

• Proposed by Alfred Wegener, this theory states that all the continents were joined as one, called Pangea, and began to split 180 million years ago.

Which of the following drives movement of Earth's tectonic plates

• Convection Cells in the Inner Core

• Displacement of Water due to gravity

• Earthquakes along the Ring of Fire

• Convection Cells in the mantle

Which of the following creates Earth's layered interior

• Magnetic Fields

• Differences in Density

• Seismic Waves

• Volcanoes

Continental Plates are made primarily of ______ while oceanic plates are made of _______.

• Granite, basalt

• Basalt, granite

• Iron, nickel

• Iron, Magnesium

Where is new Lithosphere (land) created?

• Transform Boundaries

• Convergent Boundaries

• Divergent Boundaries

• None of the answers

What type of convergent boundary MAY NOT result in a subduction zone?

• Continental - Continental: Different densitities

• Continental - Continental: Similar densities

• Oceanic - Continental: Different densities

• Oceanic - Oceanic: with any density

Which layer of Earth is a liquid?

• Crust

• Mantle

• Outer Core

• Inner Core

Which layer of earth contains tectonic plates?

• Inner Core

• Outer Core

• Mantle

• Lithosphere

List the layers in order of increasing density (lowest to highest)

• inner core, outer core, mantle, crust

• outer core, inner core, crust, mantle

• crust, mantle, outer core, inner core

• athenosphere, lithosphere, inner core, mantle, outer core

How does the magnetic field surrounding the Earth provide evidence for the structure of Earth?

• Provides a look at the composition of the mantle

• The way waves travel through the Earth indicates the state of matter of each

• The presence indicates the state of matter of the layers and protects the earth from solar flares

• The do not provide any evidence