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What is a reasonable explanation for presence of helium gas in erths crust?
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Is helium found in Earth's crust?
No. Helium is a gas and is generally found in the earth's atmosphere.
Where is Helium most commonly found in the atmosphere or in the oceans or in the earth's crust?
helium is a noble gas and is found in the earth's atmosphere and not in the oceans nor in the earth's crust
What percentage of the Earths crust is helium?
The Earth has a radius of 6,360 km. The crust varies in thickness from around 5-70 km with an average value of around 35 km. As such Earth's crust is between approximately 0.07 and 1.1 % of the total thickness of the Earth (average of 0.55 %).
What does the presence of a mid-ocean ridge indicate?
It indicates the presence of a divergent tectonic plate boundary where new crust is being formed.
Why is there any Helium on earth given it evaporates into space and does not react with anything?
Helium is created by the radioactive decay of certain elements in the earth's crust. ---- Oil wells is a common source of helium. Some people worry that we may have future shortages of helium as the supplies in wells is used/released.
How much helium is in the Earth's crust?
In the crust, the element helium is at a concentration of 8 parts per billion.
Is helium in the crust of the Ocean?
No. Helium is most abundant in the atmosphere of the Earth and in the core of the sun.
Is helium found in Earth's crust?
No. Helium is a gas and is generally found in the earth's atmosphere.
Where is Helium most commonly found in the atmosphere or in the oceans or in the earth's crust?
helium is a noble gas and is found in the earth's atmosphere and not in the oceans nor in the earth's crust
What percentage of the Earths crust is helium?
The Earth has a radius of 6,360 km. The crust varies in thickness from around 5-70 km with an average value of around 35 km. As such Earth's crust is between approximately 0.07 and 1.1 % of the total thickness of the Earth (average of 0.55 %).
What does the Earths crust have to do with a Earthquake?
Google "US Geological Survey" for a good explanation.
What does the presence of a mid-ocean ridge indicate?
It indicates the presence of a divergent tectonic plate boundary where new crust is being formed.
What happens if planet has no crust?
Gas planets such as Jupiter have no crust as they are made primary of hydrogen and helium rather than rock. A terrestrial planet without a crust would not be all that different from a planet with a crust as the difference between the crust and the mantle of a planet has more to do with chemical composition than anything else.
Why is there any Helium on earth given it evaporates into space and does not react with anything?
Helium is created by the radioactive decay of certain elements in the earth's crust. ---- Oil wells is a common source of helium. Some people worry that we may have future shortages of helium as the supplies in wells is used/released.
How can helium remain available for use on earth?
It is produced (slowly) by radioactive decay in the Earth's crust (Alpha radiation is helium nuclei). It doesn't react with anything, so when it escapes it remains in the air.
Second most abundant element?
On planet earth, silicon is the second most abundant element. It comprised 28 percent of the earth's crust. The most abundant is oxygen, which makes up about 47 percent of the earth's crust. The second most abundant element in the universe is helium.
Which of these is the best evidence that the Earth's crust has undergone some major changes?
The presence of marine fossils in mountain rock
