Question detail
Which of the following best illustrates the uncertainty in the timing of the Great Oxidation Event?
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. Different radiometric dates for the same rock layer
- B. Variations in the thickness of limestone deposits
- C. The presence of both oxidised and reduced minerals in the same strata
- D. The colour of ancient sedimentary rocks
Answer
The correct option is Variations in the thickness of limestone deposits. This answer is correct because it matches the approved learning objective to evaluate evidence and uncertainty when discussing the Earth's early atmosphere in the subtopic The Earth's early atmosphere.
Explanation
The correct option is Variations in the thickness of limestone deposits. Variations in the thickness of limestone deposits is correct because it directly supports the approved learning objective to evaluate evidence and uncertainty when discussing the Earth's early atmosphere. 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
Misunderstanding Early Atmosphere Composition
Students often state that the Earth's early atmosphere contained significant amounts of oxygen.
Remember that the Earth's early atmosphere is believed to have mainly contained carbon dioxide with little or no oxygen.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.