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Zorluk: OrtaExplicit Detail Retrieval

Passage:
In the early twentieth century, astronomer Andrew Ellicott Douglass initiated the field of dendrochronology—the science of dating environmental changes through tree-ring analysis—originally intending to investigate sunspot cycles rather than archaeological chronology. Operating under the premise that solar activity influenced terrestrial climate, Douglass posited that annual growth rings in trees across the American Southwest would reflect cyclic fluctuations in precipitation. While establishing regional ring-width chronologies using western yellow pine, Douglass discovered that cross-dating—matching ring patterns between living trees and timber from ancient structures—could determine exact calendar years for Southwestern ruins such as Pueblo Bonito. Crucially, Douglass noted that tree-ring width variations functioned as reliable indicators of precipitation exclusively in semi-arid environments where moisture availability served as the principal limiting factor for tree growth, whereas trees in temperate regions with consistent moisture exhibited ring patterns predominantly shaped by localized competition for sunlight.

According to the passage, for what primary purpose did Andrew Ellicott Douglass initially begin analyzing tree-ring growth patterns?

  1. To examine possible connections between cycles of solar activity and variations in Earth's climateCevap
  2. B
    To establish precise construction timelines for ancient archaeological settlements in the American Southwest
  3. C
    To identify how localized canopy competition alters ring development in temperate forest ecosystems
  4. D
    To demonstrate that cross-dating timber produces consistent chronological dates across all climatic zones
  5. E
    To catalog the growth responses of western yellow pine to varying soil nutrient levels in arid regions

Cevap

Andrew Ellicott Douglass initially began analyzing tree-ring patterns to examine possible connections between cycles of solar activity and variations in Earth's climate.
The option stating that Douglass sought to examine possible connections between cycles of solar activity and variations in Earth's climate is correct because the passage explicitly states in the first two sentences that Douglass began his tree-ring work 'originally intending to investigate sunspot cycles' based on the premise that 'solar activity influenced terrestrial climate.'

Adım Adım Çözüm

1
Identify the target keywords in the question stem
The prompt asks for Douglass's initial purpose or original intention for starting tree-ring analysis.
Locating explicit purpose markers ('initially', 'originally', 'intending to') directs attention to the relevant passage sentence.
2
Scan the passage for explicit statements regarding Douglass's initial objective
The first sentence notes he initiated dendrochronology 'originally intending to investigate sunspot cycles rather than archaeological chronology,' and the second sentence adds he operated 'under the premise that solar activity influenced terrestrial climate.'
Direct retrieval of explicit facts provides the accurate baseline for evaluating options.
3
Match the explicit passage detail to the correct paraphrased option
Investigating sunspot cycles and solar influence on terrestrial climate directly matches the choice stating he sought to examine possible connections between cycles of solar activity and variations in Earth's climate.
The correct answer accurately restates the passage evidence using equivalent vocabulary.

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Explicit Detail Retrieval
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Explicit Detail Retrieval

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