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Q: Which of the following statements about Ganymede is NOT correct?
  • A. It is the only moon known to have its own internally generated magnetic field
  • B. It revolves around Saturn
  • C. It is bigger than Mercury
  • D. It is the largest natural satellite in our solar system
Correct Answer: Option B - Jupiter's moon Ganymede is the largest moon in our solar system and the only moon with its own magnetic field. It was discovered by Galileo Galilei on 7 Jan. 1610. It has a diameter of about 5,270 km (3,275 miles), which makes it larger than the planet Mercury. It orbits Jupiter at a distance of 1,070,000 km (665,000 miles). It is the ninth-largest object (including the Sun) of the Solar System, it is the largest without a substantial atmosphere.
B. Jupiter's moon Ganymede is the largest moon in our solar system and the only moon with its own magnetic field. It was discovered by Galileo Galilei on 7 Jan. 1610. It has a diameter of about 5,270 km (3,275 miles), which makes it larger than the planet Mercury. It orbits Jupiter at a distance of 1,070,000 km (665,000 miles). It is the ninth-largest object (including the Sun) of the Solar System, it is the largest without a substantial atmosphere.

Explanations:

Jupiter's moon Ganymede is the largest moon in our solar system and the only moon with its own magnetic field. It was discovered by Galileo Galilei on 7 Jan. 1610. It has a diameter of about 5,270 km (3,275 miles), which makes it larger than the planet Mercury. It orbits Jupiter at a distance of 1,070,000 km (665,000 miles). It is the ninth-largest object (including the Sun) of the Solar System, it is the largest without a substantial atmosphere.