Q. Which of the following statements about planets in our Solar system is incorrect?
Q. Which of the following statements about planets in our Solar system is incorrect?
The correct option is B The Great Dark Spot is found in the southern atmosphere of Venus.
Explanation:
Statement (a) is correct: Mars is home to the tallest mountain in the solar system. Olympus Mons, a shield volcano, 21 km high and 600 km in diameter, is the tallest mountain in the solar system. Experts posit that it is still a fairly young volcano, estimating it to be only a few million years old and there's a good chance that it's still active and could erupt in the future.
Statement (b) is correct: Jupiter's moon Ganymede is the largest and the only moon having its own magnetic field present in our solar system. The magnetic field causes auroras visible like ribbons of glowing, electrified gas, in regions circling the moon’s north and south poles. When Jupiter’s magnetic field changes, the aurorae also change, “rocking” back and forth.
Statement (c) is correct: Saturn has the most extensive rings in the solar system. The Saturnian rings are made mostly of chunks of ice and small amounts of carbonaceous dust. The rings stretch out more than 120,700 km from the planet but are amazingly thin, only about 20 meters in thickness.
Statement (d) is incorrect: The Great Dark Spot in the southern atmosphere of Neptune was first discovered in 1989 by the Voyager-2 spacecraft. It was an incredibly large rotating storm system with winds of up to 1,500 miles per hour, the strongest winds recorded on any planet. In 2016, an almost identical spot emerged in Neptune's Northern hemisphere called the Great Dark Spot (NGDS), which has remained visible for several years.
Explanation:
Statement (a) is correct: Mars is home to the tallest mountain in the solar system. Olympus Mons, a shield volcano, 21 km high and 600 km in diameter, is the tallest mountain in the solar system. Experts posit that it is still a fairly young volcano, estimating it to be only a few million years old and there's a good chance that it's still active and could erupt in the future.
Statement (b) is correct: Jupiter's moon Ganymede is the largest and the only moon having its own magnetic field present in our solar system. The magnetic field causes auroras visible like ribbons of glowing, electrified gas, in regions circling the moon’s north and south poles. When Jupiter’s magnetic field changes, the aurorae also change, “rocking” back and forth.
Statement (c) is correct: Saturn has the most extensive rings in the solar system. The Saturnian rings are made mostly of chunks of ice and small amounts of carbonaceous dust. The rings stretch out more than 120,700 km from the planet but are amazingly thin, only about 20 meters in thickness.
Statement (d) is incorrect: The Great Dark Spot in the southern atmosphere of Neptune was first discovered in 1989 by the Voyager-2 spacecraft. It was an incredibly large rotating storm system with winds of up to 1,500 miles per hour, the strongest winds recorded on any planet. In 2016, an almost identical spot emerged in Neptune's Northern hemisphere called the Great Dark Spot (NGDS), which has remained visible for several years.
