Question

Approximately what proportion of earth’s crust is composed of the elements oxygen and silicon?

Answer 1

Oxygen : 47% Silicon: 28%

Step-by-step explanation:

Most of the earth's crust, or outer layer, is made up of eight elements. Oxygen tops the list in terms of abundance, with the planet's shell being composed of almost 47% of this nonmetallic chemical element. Silicon posts a second-place ranking at nearly 28% by weight.

Answer 2

74.3% (i.e. 46.6% + 27.7%)

Step-by-step explanation:

Oxygen (O) and silicon (Si) are two of the most abundant elements in the Earth's crust, and together they make up a significant proportion of its composition.

According to data from the United States Geological Survey (USGS), oxygen is the most abundant element in the Earth's crust, making up about 46.6% of the crust by weight. Silicon is the second most abundant element, making up about 27.7% of the crust by weight.

Therefore, the proportion of the Earth's crust composed of oxygen and silicon together is approximately 74.3% (i.e. 46.6% + 27.7%). This means that over three-quarters of the Earth's crust is composed of these two elements.


ALLEN