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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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
Meteorites
No *mineral* accounts for that much of Earth's composition, though the *element* iron makes up 32-35% of the mass of Earth
logonois is wrong
nickel
There are many different compositions of meteorites. The meteorites that are thought to be analogous in composition to the Earth's core are made of iron.
What is the composition of each layer of earth?
The composition of mercury is solid as well as earth.
the moon has a different iron level than the earth because the moon was not formed from the earth .
earth has people in it's atmosphere
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.
The Chemical Composition of the Earth's atmosphere is important because it holds the Earth together.
The Chemical Composition of the Earth's atmosphere is important because it holds the Earth together.
The Chemical Composition of the Earth's atmosphere is important because it holds the Earth together.
No *mineral* accounts for that much of Earth's composition, though the *element* iron makes up 32-35% of the mass of Earth
uhhh??
The composition of the moon mostly resembles the Earth's mantle.
Meteorites