UNIVERSE
SOLAR SYSTEM FORMATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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oxygen and water vapor.
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carbon dioxide and water vapor.
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volcanic gases and dust.
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hydrogen and cirrus clouds.
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Detailed explanation-1: -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-2: -Nitrogen makes up the bulk of today’s atmosphere and likely has been around since the beginning. Water vapor (H2O), probably from volcanic emissions. Carbon dioxide (CO2), also emitted by volcanic eruptions, which were plentiful at that time.
Detailed explanation-3: -The early atmosphere was rich in water vapor from volcanic eruptions and comets. When Earth was cool enough, water vapor condensed and rain began to fall.
Detailed explanation-4: -We think the Earth’s early atmosphere was made up of mostly carbon dioxide, lots of water vapour and very small amounts of methane and ammonia. These gases made it extremely hostile. There was no oxygen, making it similar to the atmosphere of Mars and Venus today.