Moons Practice Questions
18 free Moons practice questions for the Static GK. Tap an option to answer — you get instant feedback, the correct answer, and a detailed explanation for every question.
What is the natural satellite of Earth called?
- A Io
- B Titan
- C Europa
- D Moon
Correct answer: Moon
Earth's natural satellite is simply called the Moon. It is the fifth largest moon in the solar system.
Which planet has the largest number of known moons?
- A Mars
- B Neptune
- C Jupiter
- D Venus
Correct answer: Jupiter
Jupiter has the most known moons in the solar system. Its strong gravitational pull captures many objects.
What are the two moons of Mars?
- A Io and Europa
- B Titan and Rhea
- C Oberon and Titania
- D Phobos and Deimos
Correct answer: Phobos and Deimos
Mars has two small moons named Phobos and Deimos. They are irregularly shaped and likely captured asteroids.
Which is the largest moon in the solar system?
- A Titan
- B Europa
- C Ganymede
- D Callisto
Correct answer: Ganymede
Ganymede, a moon of Jupiter, is the largest moon in the solar system. It is even larger than the planet Mercury.
Which moon is known for having a thick atmosphere and lakes of methane?
- A Europa
- B Io
- C Phobos
- D Titan
Correct answer: Titan
Titan, a moon of Saturn, has a dense atmosphere and liquid methane lakes. It is one of the most Earth-like bodies.
Which moon is famous for its intense volcanic activity?
- A Io
- B Europa
- C Ganymede
- D Callisto
Correct answer: Io
Io, a moon of Jupiter, is the most volcanically active body in the solar system. Its activity is driven by tidal forces.
Which moon is believed to have a subsurface ocean beneath its icy crust?
- A Europa
- B Phobos
- C Deimos
- D Titania
Correct answer: Europa
Europa, one of Jupiter's moons, is thought to have a vast ocean beneath its ice layer. It is a target for life exploration.
Which planet has a moon named Titan?
- A Saturn
- B Jupiter
- C Uranus
- D Neptune
Correct answer: Saturn
Titan is the largest moon of Saturn. It is unique due to its thick atmosphere and hydrocarbon lakes.
Which moon always shows the same face to Earth?
- A The Moon
- B Enceladus
- C Ganymede
- D Callisto
Correct answer: The Moon
The Moon is tidally locked, meaning the same side always faces Earth. This is called synchronous rotation.
Which planet has moons named Oberon and Titania?
- A Saturn
- B Neptune
- C Jupiter
- D Uranus
Correct answer: Uranus
Uranus has moons named Oberon and Titania. Many of its moons are named after characters from Shakespeare.
Which moon is the second largest in the solar system?
- A Titan
- B Ganymede
- C Rhea
- D Callisto
Correct answer: Titan
Titan is the second largest moon after Ganymede. It is larger than the planet Mercury.
Which moon has geysers that eject water into space?
- A Enceladus
- B Prometheus
- C Phobos
- D Callisto
Correct answer: Enceladus
Enceladus, a moon of Saturn, has geysers that release water vapor and ice. This suggests a subsurface ocean.
Which of the following planets has no moons?
- A Earth
- B Mars
- C Venus
- D Jupiter
Correct answer: Venus
Venus has no natural satellites. Mercury is the only other planet without moons.
Which moon is closest to Mars?
- A Deimos
- B Phobos
- C Europa
- D Io
Correct answer: Phobos
Phobos is the closer and larger of Mars' two moons. It orbits very near to the planet.
Which moon has a retrograde orbit around its planet?
- A Europa
- B Triton
- C Io
- D Ganymede
Correct answer: Triton
Triton orbits Neptune in a retrograde direction. This suggests it may have been captured from the Kuiper Belt.
Which moon has the smoothest surface due to few impact craters?
- A Callisto
- B Europa
- C Ganymede
- D Titan
Correct answer: Europa
Europa has a very smooth surface with few craters. This indicates recent geological activity.
Which moon is heavily cratered and one of Jupiter's largest moons?
- A Ganymede
- B Europa
- C Callisto
- D Phobos
Correct answer: Callisto
Callisto is heavily cratered and one of Jupiter's largest moons. It has an ancient, unchanged surface.
Which moon is named after a sea god and orbits Neptune?
- A Triton
- B Titan
- C Rhea
- D Oberon
Correct answer: Triton
Triton is named after the sea god in Greek mythology. It is Neptune's largest moon and has a unique retrograde orbit.