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Consider the following pairs : Definition Celestial Body
1. Small rocky body that orbits the Sun - Asteroid
2. Body that enters Earth’s atmosphere - Meteor and burns up
3. Body that has hit Earth’s surface - Meteorite
4. Body made mostly of ice and dust - Meteoroid
How many pairs given above is/are correctly matched ?
  • a)
    Only one pair
  • b)
    Only two pairs
  • c)
    Only three pairs
  • d)
    All four pairs
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Consider the following pairs : Definition Celestial Body1. Small rocky...
There is a large gap between the orbits of Mars and Jupiter. This gap is occupied by a large number of small rocky objects that revolve around the Sun. These are called asteroids. Asteroids can only be seen through large telescopes. Asteroids are minor planets that cannot be classified as a planet or a comet. These are generally in the direct orbit around the Sun, also known as the inner solar system. So, Pair (1) is correct.
A meteor is usually a small object that occasionally enters the Earth's atmosphere. At that time, it has a very high speed. The friction due to the atmosphere heats it up. It glows and evaporates quickly. That is why the bright steak lasts for a very short time. So, Pair (2) is correct.
Some meteors are large, so they can reach the Earth before they evaporate completely. The body that reaches the Earth is called a meteorite. Meteorites help scientists investigate the nature of the material from which the solar system was formed. So, Pair (3) is correct.
Meteoroids are lumps of rock or iron that orbit the Sun, just as planets, asteroids, and comets do. Meteoroids, especially tiny particles called micrometeoroids, are extremely common throughout the solar system. They orbit the Sun among the rocky inner planets and the gas giants that make up the outer planets. Thus Meteoroids are not the body made mostly of ice and dust; it is Comet. Comets are icy bodies of frozen gases, rocks and dust left over from the solar system's formation about 4.6 billion years ago. They revolve around the Sun in highly elliptical orbits. However, their period of revolution around the Sun is usually very long. A Comet generally appears as a bright head with a long tail. The length of the tail grows in size as it approaches the Sun. The tail of a comet is always directed away from the Sun. So, Pair (4) is not correct.
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Consider the following pairs : Definition Celestial Body1. Small rocky...
's atmosphere and burns up - Meteoroid3. Solid object that orbits a planet - Moon4. Massive ball of gas that emits light and heat - Star5. Small icy body that orbits the Sun - Comet

Definition Celestial Body
1. Small rocky body that orbits the Sun - Asteroid
2. Body that enters Earth's atmosphere and burns up - Meteoroid
3. Solid object that orbits a planet - Moon
4. Massive ball of gas that emits light and heat - Star
5. Small icy body that orbits the Sun - Comet
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Read the following 1 Passage and answer the items that follow. Your answers to these items should be based on the passages only.Recently some scientists have concluded that meteorites found on Earth and long believed to have a Martian origin might actually have been blasted free of Mars’s gravity by the impact on Mars of other meteorites. This conclusion has led to another question whether meteorite impacts on Earth have similarly driven rocks from this planet to Mars. According to astronomer S. A. Phinney, kicking a rock hard enough to free it from Earth’s gravity would require a meteorite capable of making a crater more than 60 miles across. Moreover, even if Earth rocks were freed by meteorite impact, Mars’s orbit is much larger than Earth, So Phinney estimates that the probability of these rocks hitting Mars is about one-tenth asgreat as that of Mars’s rocks hitting Earth. To demonstrate this estimate, Phinney used a computer to calculate where 1,000 hypothetical particles would go if ejected from Earth in random directions. He found that 17 of the 1,000 particles would hit Mars.Q.According to the passage, which of the following events may have initiated the process that led to the presence on Earth of meteorites from Mars?

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Consider the following pairs : Definition Celestial Body1. Small rocky body that orbits the Sun - Asteroid2. Body that enters Earth’s atmosphere - Meteor and burns up3. Body that has hit Earth’s surface - Meteorite4. Body made mostly of ice and dust - MeteoroidHow many pairs given above is/are correctly matched ?a)Only one pairb)Only two pairsc)Only three pairsd)All four pairsCorrect answer is option 'C'. Can you explain this answer?
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Consider the following pairs : Definition Celestial Body1. Small rocky body that orbits the Sun - Asteroid2. Body that enters Earth’s atmosphere - Meteor and burns up3. Body that has hit Earth’s surface - Meteorite4. Body made mostly of ice and dust - MeteoroidHow many pairs given above is/are correctly matched ?a)Only one pairb)Only two pairsc)Only three pairsd)All four pairsCorrect answer is option 'C'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Consider the following pairs : Definition Celestial Body1. Small rocky body that orbits the Sun - Asteroid2. Body that enters Earth’s atmosphere - Meteor and burns up3. Body that has hit Earth’s surface - Meteorite4. Body made mostly of ice and dust - MeteoroidHow many pairs given above is/are correctly matched ?a)Only one pairb)Only two pairsc)Only three pairsd)All four pairsCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following pairs : Definition Celestial Body1. Small rocky body that orbits the Sun - Asteroid2. Body that enters Earth’s atmosphere - Meteor and burns up3. Body that has hit Earth’s surface - Meteorite4. Body made mostly of ice and dust - MeteoroidHow many pairs given above is/are correctly matched ?a)Only one pairb)Only two pairsc)Only three pairsd)All four pairsCorrect answer is option 'C'. Can you explain this answer?.
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