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

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Presentation transcript:

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

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)

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

The Outer Core 1, ,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 ºC ( 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

The Inner Core 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 ºC ( 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

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Works Cited “The Core.” ThinkQuest team. 30 Nov "The Layer of Earth." Planet Earth. ThinkQuest. 30 Nov "Layers of the Earth." A Teacher's Guide to the Geology of Hawaii Volcanoes National Park. Valcano World. 30 Nov "Ohio's Academic Content Standards in Science." Ohio Resource Center for Mathematics, Science, and Reading. ORC. 30 Nov "Structure of the Earth." Education Module. 30 Nov "Structure of the Earth." Wikipedia. 30 Nov “Structure of the Earth.” Scign. 30 Nov