Answer Key


Land Beneath our Feet Review Guide – ANSWER KEY



Layers of the



Name the layers of the earth from the outermost to the innermost.

Describe the materials and composition of each layer of the earth.

What are some examples of models of the earth? How do these models relate to the layers of the earth?

How did the layers of the earth most likely form?


Crust, mantle, outer core, inner core

The layers of the earth formed due to the density of the materials in each layer.


Crust: Continental – made up of solid granite, Oceanic – made up mainly of


Mantle: composed of molten rock

Outer Core: Liquid Iron and Nickel

Inner Core: Solid Iron and Nickel

Hard Boiled Egg: Egg = Crust, Egg White = Mantle, Yolk = Outer Core, Inner

Yolk (small circle) = Inner Core

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Earthquakes and


Plate Tectonics

Where do earthquakes occur?

Where do most volcanoes occur?

Along plate boundaries, also called Fault Lines

Along plate boundaries – Convergent: subduction zones where oceanic crust and continental crust meet (ie - Ring of Fire) or Divergent: underwater volcanic activity, not as destructive or spectacular as subduction zones

Divergent, Convergent, Transform Name the three types of plate boundaries.

Describe the type of motion at each type of plate boundary.

Name a land feature or event that occurs at each type of plate boundary.

Divergent Plates move away from each other, Convergent Plates move towards each other, and Transform Plates scrape back and forth past one another

Divergent: Underwater Mountain Ranges, Volcanoes, Rift Valleys

Convergent: Mountain Ranges, Ocean Trenches, Volcanoes

Transform: Earthquakes

Continental Drift Name the scientist who proposed the theory of continental drift.

Alfred Wegener

Land Beneath our Feet Review Guide – ANSWER KEY


What was wrong with his idea?


He didn’t have an explanation for HOW the plates moved

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