For decades, astronomers believed that Pluto was a unique, isolated object at the edge of the solar system. However, the discovery of the Kuiper Belt in 1992 revealed that Pluto is actually just one of thousands of icy bodies orbiting in a vast ring beyond Neptune. This discovery forced scientists to re-examine how they define planets, ultimately leading to Pluto's reclassification as a dwarf planet. Thus, the finding of the Kuiper Belt shifted our understanding of Pluto from an anomalous outlier to a representative member of a larger outer solar system population.
Which choice best states the main idea of the text?
- The discovery of the Kuiper Belt changed scientists' view of Pluto by showing it is part of a larger population of icy bodies rather than a unique outlier.Cevap
- BScientific definitions of astronomical objects are constantly changing as new technologies allow astronomers to explore the outer solar system.
- CPluto was reclassified as a dwarf planet because astronomers discovered it was orbiting Neptune instead of the Sun.
- DAstronomers will likely find even larger planets in the outer solar system as they continue to study the Kuiper Belt.
Cevap
The discovery of the Kuiper Belt changed scientists' view of Pluto by showing it is part of a larger population of icy bodies rather than a unique outlier.
The correct option accurately states the central idea of the text. The passage describes how Pluto went from being viewed as an isolated outlier to a representative member of a larger population (the Kuiper Belt), which altered scientific definitions and Pluto's planetary classification.
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Anahtar Kavram
Identifying the central idea of a passage by synthesizing the text's details and main conclusion.