Correct Answer - Option 1 : Oxygen
Oxygen is the most common element in the earth's crust.
The Crust:
- The crust is the outermost layer of a planet.
- The Earth is composed of a number of different elements, but the crust only makes up 1% of the Earth’s volume in a thin outer layer which encases the other parts of the inner planet including the mantle, outer core and inner core.
- The Earth’s crust is 25 miles, or 40 km deep and is composed of solid rocks and minerals that cooled and solidified when the Earth was young.
- There are many different elements which can be found in the crust.
Elements and their amount:
- Oxygen - 46.1%
- Silicon - 28.2%
- Aluminium - 8.23%
- Iron - 5.63%
- Calcium - 4.15%
- Sodium - 2.36%
- Magnesium - 2.33%
- Potassium - 2.09%
- Titanium - 0.565%
- Hydrogen - 0.140%
One of the most prominent and important elements that make up the crust of the earth is Oxygen. Oxygen is the most abundant element in the Earth’s crust, at 461,000 parts per million. This means it makes up roughly 46% of the Earth’s crust.
