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The most abundant element in the Earth's core is iron. The planet's core is comprised of an inner core, which is primarily iron, and an outer core, which is an alloy combination of iron and nickel. More »

www.reference.com Science Earth Science Layers of the Earth

The most abundant metal on Earth is aluminum. Aluminum is the third most abundant element in the Earth's crust, and makes up 8 percent of it by parts per million. More »

www.reference.com Science Chemistry Organic Chemistry

The most abundant element on Earth is oxygen, but the most abundant element in the entire universe is hydrogen. On Earth, oxygen makes up approximately 47 percent of the Earth's mass and is found both in Earth's atmosphe... More »

www.reference.com Science Chemistry Atoms & Molecules
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While iron and nickel form the liquid outer layer of Earth's core, the solid inner core is made mostly of iron. The iron in Earth's core is what gives the planet its magnetic field. More »

www.reference.com Science Earth Science Layers of the Earth

The center of the Earth is called its inner core, which is solid and surrounded by the liquid outer core. The outer core is surrounded by the solid mantle layer, which moves in response to a temperature difference of at ... More »

www.reference.com Science Earth Science Layers of the Earth

As of April 26, 2013, a French research team has estimated the temperature of the Earth’s inner core at 10,800 degrees Fahrenheit. This is 1,800 degrees hotter than previous estimates. The newly hypothesized temperature ... More »

www.reference.com Science Earth Science Layers of the Earth

The Earth is divided into four layers: crust, mantle, outer core and inner core. The crust is the only layer of Earth that hosts life, as the mantle, inner core and outer core are too hostile for organisms to exist. More »

www.reference.com Science Earth Science Layers of the Earth