Solar System Online Test

1. How many moons does Mars have?

2. What is the Earth's mantle primarily composed of?

3. How many major rings does Saturn's ring system consist of?

4. Which comet fragmented and collided with Jupiter in 1994, producing a series of impact events observed by astronomers?

5. What geological feature on Earth is formed by the bending or buckling of rock layers under compressional stress, leading to the uplift of mountain ranges?

6. What is the layer of soil that contains organic matter, microorganisms, and plant roots, and is vital for supporting plant growth?

7. Which space telescope is famous for its stunning images of distant galaxies, nebulae, and star clusters?

8. Which spacecraft, launched by NASA in 2006, conducted a historic flyby of Pluto in 2015, providing the first detailed images of the dwarf planet and its moons?

9. What is the name of the moon of Makemake discovered in 2015?

10. Which gas is present in Pluto's thin atmosphere?

11. What is the most prominent feature of Saturn?

12. Which moon of Uranus is known for its unusual, roughly spherical shape, with a diameter about one-third that of our Moon?

13. What is the name of the dark, circular feature on the Moon's surface, formed by a volcanic eruption or impact?

14. Which moon of Mars is closer to the planet?

15. Which planet in the Solar System is known for its massive dust storms that can engulf the entire planet for months?

16. Which celestial body exhibits significant tidal heating, resulting in geologically active features such as cryovolcanoes?

17. What term refers to the fuzzy, glowing region surrounding the nucleus of a comet?

18. Which space probe became the first human-made object to reach interstellar space?

19. What is the process by which plants and animals naturally adapt to their environment over time?

20. Which effect of tidal forces is responsible for the gradual recession of the Moon from Earth and the lengthening of Earth's day?

21. Which of the following is NOT a greenhouse gas?

22. What is the name of the process by which rocks are broken down into smaller fragments through physical, chemical, or biological means?

23. What is the name of the largest volcano on Venus?

24. Which type of comets are believed to originate from the Oort Cloud?

25. Which Mars rover recently completed its mission, having operated on the Martian surface for over 15 years?

26. What geological feature on Mercury suggests it has contracted over time?

27. What is the Kuiper Belt?

28. How does the temperature on Mercury's surface vary?

29. What is the primary component of Uranus's atmosphere?

30. What is the name of the elongated extension of Earth's magnetosphere on the side opposite the Sun?