UNIVERSE
SOLAR SYSTEM FORMATION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Why did Earth’s first atmosphere lose it’s gases?
|
|
Earth’s gravity was too weak to keep them.
|
|
|
The solar winds were too strong for the light elements.
|
|
|
Both A and B are correct.
|
|
|
None of the above
|
Explanation:
Detailed explanation-1: -Earth’s early atmosphere was enriched with hydrogen and helium gases. But over time, Earth lost these gases because it wasn’t large enough to hold onto them. Atmospheric composition is related to escape velocity.
Detailed explanation-2: -When the Earth first started to form 4.6 billion years ago, the first atmosphere was probably made mainly of hydrogen and helium. These two gases make up most of the matter in the Solar System and are still present in huge quantities in the outer gas planets.
Detailed explanation-3: -Earth’s original atmosphere was rich in methane, ammonia, water vapour, and the noble gas neon, but it lacked free oxygen.
There is 1 question to complete.