Land Beneath our Feet Review Guide – ANSWER KEY
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Topic
Layers of the
Earth
Question
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?
Answer
Crust, mantle, outer core, inner core
The layers of the earth formed due to the density of the materials in each layer.
Name
Crust: Continental – made up of solid granite, Oceanic – made up mainly of
Basalt
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
Page in the ISN
Earthquakes and
Volcanoes
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
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What was wrong with his idea?
Name
He didn’t have an explanation for HOW the plates moved