Examkin

Question

Difficulty: MediumEvaluating Intermediate Conclusions

Arrange the following five argumentative statements into their most logical sequence, proceeding from foundational evidence to the intermediate conclusion, through secondary evidence, and finally to the main conclusion.

  1. 1The phenomenon of gravitational microlensing occurs when the mass of a foreground object bends and magnifies the light emitted by a distant background star.
  2. 2Because free-floating 'rogue' planets possess sufficient mass, their passage directly between Earth and a background star triggers a brief, identifiable microlensing event.
  3. 3Consequently, by continuously monitoring background stars for these magnification spikes, astronomers can reliably detect otherwise invisible rogue planets.
  4. 4Detecting these unseen planets is the only empirical method for verifying current theoretical models, which predict that planetary systems frequently eject nascent planets during their chaotic early stages.
  5. 5Therefore, to truly understand the early evolution of planetary systems, it is crucial that the scientific community funds large-scale surveys dedicated to microlensing observation.

Answer

The correct sequence begins with the foundational premises defining microlensing and its application to rogue planets, leads to the intermediate conclusion that this method allows detection of these planets, introduces the secondary premise about verifying theoretical models, and ends with the main conclusion advocating for survey funding.
A well-structured logical argument flows from basic factual premises to derived claims, and finally to the ultimate recommendation. In this sequence, the definition of microlensing and its application to rogue planets provide the factual basis. These facts support the intermediate conclusion that astronomers can detect these planets. This intermediate conclusion is then combined with the secondary premise about the importance of verifying theoretical models, ultimately justifying the main conclusion that funding for these surveys is crucial.

Step-by-Step Solution

1
Identify the primary premises that introduce the core physical concepts.
The statements defining microlensing and applying it to rogue planets form the initial evidential base.
Arguments must establish basic facts before drawing logical inferences from them.
2
Locate the intermediate conclusion derived directly from the primary premises.
The statement beginning with 'Consequently' serves as the intermediate conclusion, deducing that rogue planets can be detected based on the initial physical facts.
An intermediate conclusion synthesizes early evidence to create a new, derived premise for the rest of the argument.
3
Identify secondary premises that connect the intermediate conclusion to the final goal.
The statement explaining the importance of detecting these planets for verifying theoretical models bridges the gap to the final conclusion.
Additional context is needed to explain why the capability established in the intermediate conclusion matters.
4
Identify the main conclusion.
The normative statement beginning with 'Therefore' and advocating for survey funding is the main conclusion.
The main conclusion is the ultimate point of the argument, supported by all prior premises and intermediate conclusions.

Key Concept

Evaluating Intermediate Conclusions
Rate this question

Topics

Evaluating Intermediate Conclusions

More questions from this topic