How has the Earth changed?
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Transcript of How has the Earth changed?
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How has the Earth changed?
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If it was possible to dig to the center of the Earth, what would you find?
What is the Earth made out of?
crust – the rocky, outer layer beneath your feet. Know as the lithosphere.
mantle – the semi-liquid, very high temperature layer below the crust. The cooler section near to the crust is less mobile than the hotter section next to the core (known as the asthenosphere).
core – the layer at the center of the Earth. This layer is divided into two sections: the liquid, outer core and the solid, inner core.
You would dig through three sections:
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Cross-section of the Earth
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Tectonic Plates Notes
• http://www.wwnorton.com/college/geo/egeo2/content/animations/2_1.htm
• http://www.youtube.com/watch?v=K8blL9Ki2mQ&safe=active
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What is the Earth’s crust made of?
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Minerals and metals
Many of the useful substances we get from the Earth’s crust are minerals, which contain metals.
Here are the names and formulae of some of the most common minerals.
Fe2O3
Al2O3
PbSTiO2
CuFeS2
haematitebauxitegalena
chalcopyriterutile
mineral formula metal extracted from itironaluminumleadtitaniumcopper