Plate Tectonics & Earth's Layers

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 less dense

• Oceanic is less dense

• Continental is made of basalt

• Oceanic is made of granite

The lithosphere is subdivided into:

• tectonic plates
• continents
• islands
• poles

What is the driving force behind plate tectonics?

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

Mountain ranges are a result of:

• oceanic-oceanic
• oceanic-continental
• continental-continental
• sea-spreading

A difference between the inner and outer core

• Outer core is solid
• Inner core is liquid
• Outer core has magnesium
• Inner core has iron

What type of boundary is indicated here at the red dot?

• convergent
• divergent
• transform
• none

What travels from the mantle in order to form new crust?

• magma
• outer core
• convection currents
• asthenosphere

What are usually common at transform boundaries?

• volcanoes
• earthquakes
• rivers
• deserts