Earth's Layers and Plate Tectonics

Order the layers of the Earth from the most dense to the least

• crust, mantle, outer core, inner core
• inner core, outer core, mantle, crust
• crust, mantle, inner core, outer core
• inner core, outer core, crust, mantle

Which layer of the Earth is the thickest?

• Inner Core
• Mantle
• Crust
• Outer Core

What is a difference between oceanic & continental crust?

• Continental is thicker
• Oceanic is thicker
• Continental is made of basalt
• Oceanic is made of granite

State of matter the rocks that are in the mantle:

• Solid
• Liquid
• Gas
• Semisolid

What is the driving force behind plate tectonics?

• convection currents
• magnetic reversal
• volcanic eruption
• subduction zones

Where in the mantle are convection currents found?

• Upper
• Lower
• Middle
• Center

This structure rests on top of the asthenosphere:

• Lithosphere
• Outer Core
• Lower Mantle
• Oceanic Crust

The lithosphere is subdivided into:

• tectonic plates
• continents
• islands
• poles

Which of the following is not a piece of Wegener's evidence?

• fossils
• glaciers
• rocks
• rivers

Another word used to describe a force acting on a rock:

• stress
• pressure
• compaction
• subduction