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Earth's solid mass is about 32% iron, 30% oxygen, 15% silicon, 14% magnesium, 3% sulfur, 2% nickel, 1.5% calcium, and 1.4% aluminum. Much of the iron and nickel are in the planetary core, which is 89% iron and 6% nickel. The atmosphere consists of 78% nitrogen and 21% oxygen, with traces of other gases including carbon dioxide (0.3%).

Earth's gravity is insufficient to hold onto high-atmosphere hydrogen and helium, so it has no thick, dense hydrogen atmosphere like the 4 larger planets. Since the planet's formation, comets have deposited water on Earth to provide hydrogen. Helium has been replaced through the decay of radioactive elements in the crust, and is normally found in underground methane deposits.

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βˆ™ 13y ago
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The Earth consists mainly of iron, oxygen, silicon, and magnesium, with smaller amounts of other elements such as nickel, sulfur, and calcium. These elements make up the Earth's crust, mantle, and core.

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βˆ™ 10y ago

Earth's solid mass is about 32% iron, 30% oxygen, 15% silicon, 14% magnesium, 3% sulfur, 2% nickel, 1.5% calcium, and 1.4% aluminum. Much of the iron and nickel are in the planetary core, which is 89% iron and 6% nickel. The atmosphere consists of 78% nitrogen and 21% oxygen, with traces of other gases including carbon dioxide (0.3%). Earth's gravity is insufficient to hold onto high-atmosphere hydrogen and helium, so it has no thick, dense hydrogen atmosphere like the 4 larger planets. Since the planet's formation, comets have deposited water on Earth to provide hydrogen. Helium has been replaced through the decay of radioactive elements in the crust, and is normally found in underground methane deposits.earth is great

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Q: What is the composition of the Earth?
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What is the composition of each of the Earth's layer?

What is the composition of each layer of earth?


Does the composition of the Earth affect the motion of the Earth?

Yes. The effect of gravity on the Earth, and of Earth on other celestial bodies could be very different if the composition of the planet was different.


What will collide with earth that provides evidence of earth's inner composition?

Meteorites that originate from the asteroid belt can collide with Earth, carrying evidence of Earth's inner composition. By analyzing these meteorites, scientists can study the interior structure and composition of our planet.


Why is the chemical composition of earth atmosphere important?

The Chemical Composition of the Earth's atmosphere is important because it holds the Earth together.


What mineral accounts for 35 percent of the Earth's composition?

Iron is the mineral that accounts for approximately 35% of the Earth's composition. It is a crucial element in the Earth's core and mantle, as well as in the composition of rocks and minerals throughout the planet.


Why is chemical composition of earths atmosphere important?

The Chemical Composition of the Earth's atmosphere is important because it holds the Earth together.


Why is earths composition of earths atmosphere important?

The Chemical Composition of the Earth's atmosphere is important because it holds the Earth together.


What accounts for 35 percent of the earth's composition?

No *mineral* accounts for that much of Earth's composition, though the *element* iron makes up 32-35% of the mass of Earth


What would you think have happen the effect if the composition of the earth is the opposite of current composition?

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The composition of the moon mostly resembles?

The composition of the moon mostly resembles the Earth's mantle.


Which metal has the highest percentage composition on earth?

Iron has the highest percentage composition on Earth's crust, making up about 5.6% by weight.


What scientist study the composition of the earth?

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