EVERYDAY SCIENCE

SCIENCE

EARTH SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the range of pressure in Earth’s interiorwhere rock with a density range of 9.9 to12.2 g/cm3 is found?
A
0.2 to 1.4 million atmospheres
B
0.8 to 2.3 million atmospheres
C
1.4 to 3.1 million atmospheres
D
2.3 to 3.5 million atmospheres
Explanation: 

Detailed explanation-1: -The range of pressure in Earth’s interior where rock with a density range of 9.9 to 12.2 g/cm3 is found to be 0.8 to 2.3 million atmospheres.

Detailed explanation-2: -Pressure and gravity The pressure in the Earth’s inner core is slightly higher than it is at the boundary between the outer and inner cores: It ranges from about 330 to 360 gigapascals (3, 300, 000 to 3, 600, 000 atm).

Detailed explanation-3: -Inner core The hot dense core has a radius of about 759 miles (1, 221 kilometers) and a pressure of about 3.6 million atmospheres (atm).

Detailed explanation-4: -Just like the temperature, the pressure is also increasing from the surface towards the centreof the earth. It is due to the huge weight of the overlying materials like rocks.

Detailed explanation-5: -The standard pressure at sea-level is 1013.25 in both millibars (mb) and hectopascal (hPa). The number of molecules in the atmosphere decreases with height.

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