What makes up the Earth

Name the most common elements or compounds in each part of the Earth
Abundance by mass
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Last updated: April 14, 2017
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First submittedAugust 25, 2015
Times taken41
Average score44.4%
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Most abundant elements in Earth's crust
Oxygen
Silicon
Aluminium
Iron
Calcium
Sodium
Potassium
Magnesium
Titanium
Hydrogen
Most abundant compounds in Earth's crust
Silicon dioxide
Magnesium oxide
Ferrous oxide
Aluminium oxide
Calcium oxide
Sodium oxide
Ferric oxide
Titanium dioxide
Chromic oxide
Manganese dioxide
Most abundant chemicals in Earth's atmosphere
Nitrogen
Oxygen
Water
Argon
Carbon dioxide
Neon
Helium
Methane
Hydrogen
Nitrous oxide
Ozone
Most abundant elements in seawater
Oxygen
Hydrogen
Chlorine
Sodium
Magnesium
Sulfur
Calcium
Potassium
Bromine
Most abundant elements in Earth's core
Iron
Silicon
Nickel
Sulfur
Chromium
Carbon
Phosphorus
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