Question detail
What role did volcanic activity play in the formation of the early atmosphere?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
The composition and evolution of the Earth's atmosphere
Question
- A. It cooled the Earth.
- B. It released gases that formed the atmosphere.
- C. It created oceans.
- D. It increased oxygen levels.
Answer
The correct option is It released gases that formed the atmosphere.. This answer is correct because it matches the approved learning objective to describe possible early atmospheric gases including methane and ammonia in the subtopic The Earth's early atmosphere.
Explanation
The correct option is It released gases that formed the atmosphere.. It released gases that formed the atmosphere. is correct because it directly supports the approved learning objective to describe possible early atmospheric gases including methane and ammonia. This belongs to the subtopic The Earth's early atmosphere within The composition and evolution of the Earth's atmosphere, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from The Earth's early atmosphere.
Common mistake
Confusing Early Gases
Students often confuse methane and ammonia as being the same gas when describing possible early atmospheric gases.
Remember that methane (CH₄) is a hydrocarbon, while ammonia (NH₃) is a nitrogen compound. Make sure to distinguish between their chemical formulas and properties.
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