SOLAR SYSTEM

Detailed explanation-1: -Volcanic eruptions spewed gases from Earth’s interior to the atmosphere, a process called outgassing that continues today. Most of the gas was carbon dioxide and water vapor. The water vapor condensed to form part of Earth’s oceans as the surface cooled.

Detailed explanation-2: -When Earth formed 4.6 billion years ago from a hot mix of gases and solids, it had almost no atmosphere. The surface was molten. As Earth cooled, an atmosphere formed mainly from gases spewed from volcanoes. It included hydrogen sulfide, methane, and ten to 200 times as much carbon dioxide as today’s atmosphere.

Detailed explanation-3: -Earth’s Second Atmosphere The second atmosphere, which was the first to stay with the planet, formed from volcanic outgassing and comet ices. This atmosphere had lots of water vapor, carbon dioxide, nitrogen, and methane but almost no oxygen. Why was there so little oxygen?

Detailed explanation-4: -Earth’s original atmosphere was rich in methane, ammonia, water vapour, and the noble gas neon, but it lacked free oxygen.

Detailed explanation-5: -Outgassing is the term used to describe the gases that come out from volcanic eruptions.

Detailed explanation-6: -The Eruption Theory Big, explosive volcanic eruptions can change the Earth’s climate (not small ones). Volcanic eruptions produce ash and sulphur dioxide gas. If the ash and gas rise high enough, they will be spread around the Earth in the stratosphere (2nd layer of the Earth’s atmosphere) by high level winds.