Biology

Biology, 22.06.2019 02:10, daniel1480

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these

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Biology, 18.07.2019 13:40, NetherisIsTheQueen

Why is the earth’s core made up mainly of iron while the crust contains mostly silicate minerals? a. because iron melts and silicate minerals do not b. because iron is less dense than silicate minerals c. because silicate minerals melt and iron does not d. because iron is denser than silicate minerals

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Geography, 24.07.2019 20:30, daniecott

Why does the earth have a nickel-iron core at its center, surrounded by a silicate mantle? a. silicates are less rigid than metal, so the mantle and crust flowed outward to the exterior b. the core formed first from metallic meteoritesc. a metal core occurs at the center of most planetsd. because it is more dense, the core material sank to the center of the earthe. the intense pressure at the center of the earth caused primordial nebular material to transmutate into metal

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Geography, 29.07.2019 16:30, sngarcia

The source of earth's magnetic field is a.solid magnetized iron in the core b.liquid magnetized iron in the core c.liquid iron in the core d.liquid metallic hydrogen in the core,

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