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MCA Mild/Moderate Science (054) Practice Tests & Test Prep by Exam Edge


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MCA Mild/Moderate Middle/Secondary Multi-Content Science Sample Test

1 of 5

Which of the following distances is the shortest?

Correct Answer:
from the earth to the moon


the question asks to determine which of the given distances is the shortest. the options include distances from the earth to various celestial bodies: the sun, the moon, mars, and between the moon and the sun.

to discern which distance is shortest, it's essential to have a basic understanding of the relative positions and typical distances of these celestial bodies from the earth. the average distances are approximately as follows: the earth to the moon is about 384,400 kilometers; the earth to the sun is about 149.6 million kilometers; the earth to mars varies between 54.6 million and 401 million kilometers depending on the orbits of earth and mars; and the distance from the moon to the sun would roughly be the distance from the earth to the sun minus the distance from the earth to the moon, which makes it also significantly more than the distance from the earth to the moon.

given these average distances, the shortest distance among the listed options is clearly from the earth to the moon. this is because the moon orbits earth and is our closest celestial neighbor. the next closest in terms of distance would be mars at its closest orbital approach to earth, followed by the sun, and then the distance from the moon to the sun, which is almost similar to the distance from the earth to the sun.

thus, in comparing these astronomical distances, it becomes evident that the distance from the earth to the moon is by far the shortest. hence, the correct answer to the question is the distance from the earth to the moon. this answer underscores the importance of understanding basic astronomical distances when comparing the proximity of celestial bodies in our solar system.
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