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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 outer core of the Earth begins about 1,800 miles below the Earth's surface and is between 1,370 and 1,430 miles thick. It is composed of liquid iron and nickel with some trace elements. More »

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

The Earth consists of four layers: crust, mantle, outer core and inner core. Each layer has its own properties and characteristics that separates it from the other layers. More »

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

The four layers of the Earth are called the inner core, the outer core, the mantle and the crust. In addition, there are two different types of crust. The continental crust is the part that is under land, and the oceanic... More »

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