What is Earth made of?

[robortwillys]

The Earth is made out of many things. Deep inside Earth, near its center, lies Earth's core which is mostly made up of nickel and iron. Above the core is Earth's mantle, which is made up of rock containing silicon, iron, magnesium, aluminum, oxygen and other minerals. The rocky surface layer of Earth, called the crust, is made up of mostly oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium. Earth's surface is mainly covered with liquid water and its atmosphere is is mainly nitrogen and oxygen, with smaller amounts of carbon dioxide, water vapor and other gases.

[christainpaul]

The Earth is always changing. Plate tectonic theory tells us that the continents continue to slip and slide across the planet's surface. There are three classes of rocks on Earth: igneous rocks come from molten material below the Earth's crust; sedimentary rocks are laid down in layers as wind and water cause erosion and deposition of minerals; and metamorphic rocks started out in one form and were changed through heat and pressure to something different.

[sahee2]

:confused: 32% iron, 30% oxygen, 15% silicon, 14% magnesium, 3% sulfur, 2% nickel, and then much smaller piles of calcium, aluminum, and other trace elements.:)

Obviously, we don't breath an iron atmosphere or swim in oceans of silicon. The elements of Earth layered in the planet. Beneath the crust is the mantle, which goes down to a depth of 2890 km. It's the largest layer on Earth, and mostly consists of silicate rocks rich in iron and magnesium. Volcanoes are places where this mantle wells up through the crustare.:o

[Anna1]

In other hand, the earth is made of love :D

[Miuka]

Yep, Anna, it's true!!!:)

[lovingnet5]

The Earth is made out of many things. Deep inside Earth, near its center, lies Earth's core which is mostly made up of nickel and iron. Above the core is Earth's mantle, which is made up of rock containing silicon, iron, magnesium, aluminum, oxygen and other minerals. The rocky surface layer of Earth, called the crust, is made up of mostly oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium. Earth's surface is mainly covered with liquid water and its atmosphere is is mainly nitrogen and oxygen, with smaller amounts of carbon dioxide, water vapor and other gases.