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Layers of the Earth

Layers of the Earth

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Layers of the Earth

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  1. Layers of the Earth Katie Borucki Caitlin Hale Lisa Ruggio Rachel Sekerak

  2. The Crust • The outer most region of the Earth • Mostly made up of basalt and granite • Igneous rock • Ranges from 5 km to 10 km at sea level, and 10 km to 70 km in the continental regions • The least dense of all the Earth’s layers • Temperature ranges from air temperature to 900 ºC (about 1652 ºF)

  3. The Mantle • A shell made up of dense rock • Consists of mostly oxygen, silicon, and magnesium • Can be found between 30 and 2,900 km below the Earth’s crust • Temperature ranges from 500 ºC near the crust to 4000 ºC near the core (between 932 and 7232 ºF) • Where most of the internal heat of the Earth is located

  4. The Outer Core • 1,800 - 3,200 miles (2,890-5,150 km) below the earth's surface • Consists mainly of iron, some nickel and about 10% sulfur and oxygen • The temperature in the outer core is about 4000-5000 ºC (7200 - 9032 ºF) • Since it is so hot, the outer core is liquid • The density of the outer core is between the 10g/cm³ and 12.3g/cm³ • Outer core and inner core together cause the earth's magnetism • Earth’s rotation • Outer core rotates while inner core does not and this causes the magnetism • Radiates a natural heat to the upper layers • Causes convection currents which cause the motion of tectonic plates

  5. The Inner Core • 3,200 - 3,960 miles (5,150-6,370 km) below the earth's surface • Mainly consists of iron, nickel and some lighter elements (sulfur, carbon, oxygen, silicon and potassium) • The temperature in the inner core is about 5000-6000 ºC (9032 - 10832 ºF) • Even though the inner core is extremely hot, it is solid because of high pressures • The average density of the core is about 15g/cm³

  6. Cookie Activity

  7. Works Cited “The Core.” ThinkQuest team. 30 Nov. 2006 <http://mediatheek.thinkquest.nl/ ~ll125/en/core.htm>. "The Layer of Earth." Planet Earth. ThinkQuest. 30 Nov. 2006 <http://library.thinkquest.org/ 28327/html/universe/ solar_system/planets/earth/interior/layers_of_earth.html>. "Layers of the Earth." A Teacher's Guide to the Geology of Hawaii VolcanoesNational Park. Valcano World. 30 Nov. 2006 <http://volcano.und.edu/vwdocs/vwlessons/ plate_tectonics/part1.html>. "Ohio's Academic Content Standards in Science." Ohio Resource Center forMathematics, Science, and Reading. ORC. 30 Nov. 2006 <http://ohiorc.org/content_stds/ohio_stds/ standards/?type=2&std=44&disc=2#g4>. "Structure of the Earth." Education Module. 30 Nov. 2006 <http://scign.jpl.nasa.gov/learn/ plate1.htm>. "Structure of the Earth." Wikipedia. 30 Nov. 2006 <http://en.wikipedia.org/wiki/ Layers_of_the_earth>. “Structure of the Earth.” Scign. 30 Nov. 2006 <http://scign.jpl.nasa.gov/learn/plate1.htm>.