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Zorluk: OrtaDetermining Author's Primary Purpose

For centuries, sailors navigated the open seas using charts that struggled to represent the curved surface of the Earth on a flat sheet of paper. In 1569, Flemish cartographer Gerardus Mercator introduced a map projection that revolutionized maritime navigation. By rendering lines of constant course—loxodromes or rhumb lines—as straight lines on the map, Mercator enabled navigators to plot a straight-line bearing between two points and maintain that direction without constant adjustments. However, this mathematical convenience came at a significant cost: to keep the angles correct, Mercator had to stretch the spacing of latitude lines as they approached the poles. Consequently, the Mercator projection distorts the relative size of landmasses, exaggerating the scale of areas near the poles (such as Greenland) while shrinking regions near the equator (such as Africa). While modern critics often lambast the projection for its geopolitical bias, its original design was not born of ideological distortion but rather of a practical engineering solution to a hazardous nautical problem.

Which of the following best describes the primary purpose of the passage?

  1. A
    detail the specific mathematical methods Mercator used to map constant-course bearings known as rhumb lines.
  2. explain the functional utility and inherent scale distortions of the Mercator projection, emphasizing its practical origins.Cevap
  3. C
    assert that flat maps are fundamentally incapable of providing reliable geographical data for maritime navigation.
  4. D
    criticize modern cartographers for failing to address the geopolitical biases inherent in historical navigation charts.

Cevap

The correct answer is the option explaining the functional utility and inherent scale distortions of the Mercator projection while emphasizing its practical origins.
The correct option accurately captures the main thrust of the passage: it explains both the utility of the Mercator projection (straight course lines for navigation) and its drawback (size distortion near the poles), and clarifies that the distortion was a product of practical design rather than political bias.

Adım Adım Çözüm

1
Identify the main topic of the passage.
The passage discusses the Mercator projection, how it helped sailors navigate, its distortion of land sizes, and its original, non-ideological purpose.
Determining the subject and major details helps define the boundaries of the author's primary purpose.
2
Analyze the author's attitude and concluding thoughts.
The author defends Mercator's design against modern geopolitical critics, emphasizing it was a practical engineering solution.
Understanding the author's stance helps separate the main objective from supporting details.
3
Evaluate the options to find the one that encompasses the entire passage's argument rather than a single detail.
The correct choice highlights both the functional benefits, the scale distortions, and the practical motivation of the design, which summarizes the whole passage.
The primary purpose must cover the overarching goal of the passage, not just one paragraph or sentence.

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Determining Author's Primary Purpose
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Determining Author's Primary Purpose

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