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Questions and Answers
Approximately how old is planet Earth?
Approximately how old is planet Earth?
- 10 thousand years old
- 4.54 billion years old (correct)
- 100 million years old
- 1 million years old
What does 'Ma' mean in the graphic?
What does 'Ma' mean in the graphic?
- Million acres
- Molar absorption
- Micro angstrom
- Mega annum (correct)
What is the main cause of the Earth being molten in its earliest stage?
What is the main cause of the Earth being molten in its earliest stage?
- Frequent collisions with other bodies (correct)
- Giant impact collision
- Volcanic outgassing
- Extreme volcanism
What contributed to the understanding of Earth's past?
What contributed to the understanding of Earth's past?
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What did the early atmosphere contain?
What did the early atmosphere contain?
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Which branch of science has contributed the most to understanding the main events of Earth's past?
Which branch of science has contributed the most to understanding the main events of Earth's past?
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When did Earth form in relation to the age of the universe?
When did Earth form in relation to the age of the universe?
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What process is believed to have created the primordial atmosphere and the ocean?
What process is believed to have created the primordial atmosphere and the ocean?
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What was the oxygen content of the early atmosphere?
What was the oxygen content of the early atmosphere?
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What is the geological time scale (GTS) used for?
What is the geological time scale (GTS) used for?
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