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http://volcano.oregonstate.edu/vwdocs/vwlessons/lessons/Earths_layers/Earths_layers4.htm

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http://www.universetoday.com/26717/earths-mantle/
http://science.discovery.com/tv-shows/greatest-disco

http://science.discovery.com/tv-shows/greatest-discoveries/videos/100-greatest-discoveries-the-core-of-the-earth.htm

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For there to be a magnetic field, there must be liquid metal. The metal must be convecting. If the core did not have convecting metal, there would be no magnetic field.

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Seismic waves show that the outer core is liquid. The inner core is solid.

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Metallic meteorites are thought to be from the same type of material that is found at the core

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Scientists know that the core is metal. The inner core is solid and the outer part of the core is liquid.

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A meteor that survives its passage through the earth's atmosphere such that part of it strikes the ground.

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The summary of this passage was

About the mantle and how it is made of solid peridotite. It was also about conduction and how conduction from the core heats the lower mantle. It was also about mantle convection and how it brings hot material up toward the surface.

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Process in which energy moves from a location of higher temperature to a location of lower

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Dense, dark igneous rock that makes up the mantle.

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Movement of material due to differences in temperature.

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Only the heat moves, not the material.

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In conduction, heat is transferred as atoms collide.

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At the top of the mantle it moves horizontally.

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Beneath the crust is the mantle. The mantle is made of hot, solid rock.

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The summary of this passage was about the types of crust. It talked about two kinds of crust, oceanic and continental and what they are made of and what they are in general. It described the properties of the two types of crust including that continental crust is thicker than oceanic crust and that oceanic crust is made of basalt leaves that flow onto the seafloor.

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Portion of Earth’s crust that makes up the continents.

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Portion of Earth’s crust that makes up the seafloor.

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Thin brittle outer layer of Earth.

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Continental crust is much thicker than oceanic crust. There are two kinds of crust.

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Oceanic crust is made of basalt lavas that flow onto the seafloor. Earth’s crust is a thin, brittle outer shell.