Solar System Online Test

1. What is the central solid core of a comet called?

2. Which layer of the Earth's atmosphere contains the ozone layer?

3. What is the largest moon of Pluto?

4. What is the name of the process by which rocks are transformed into new types of rocks through heat and pressure?

5. Which moon of Jupiter has a thin atmosphere composed mostly of carbon dioxide, with surface pressures less than one-thousandth of Earth's?

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

7. What is the name of a small rocky or metallic body in space that enters Earth's atmosphere and produces a streak of light?

8. How many rings does Uranus have?

9. Which space probe is currently studying the polar regions and atmosphere of Mars, searching for signs of past or present life?

10. Which of the following is NOT a type of rock formed by the process of weathering and erosion?

11. What is axial tilt in planetary astronomy?

12. What is the name of the first successful Mars rover mission, launched by NASA in 1996, which provided valuable data on the Martian surface and atmosphere?

13. Which asteroid is the largest object in the Asteroid Belt?

14. What geological feature on Earth is formed by the stretching and thinning of the crust, leading to the sinking of blocks of land between parallel faults?

15. What is the name of the largest feature on Pluto's surface, which is a heart-shaped region?

16. Which spacecraft conducted a flyby of Pluto and explored the Kuiper Belt object Arrokoth?

17. Which space telescope observes the universe in X-ray wavelengths, allowing scientists to study high-energy phenomena such as black holes and supernova remnants?

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

19. According to Kepler's first law of planetary motion, what shape do planetary orbits trace around the Sun?

20. Which mission is currently orbiting Mercury to study its surface and composition?

21. What is the name of a meteoroid that survives its passage through Earth's atmosphere and strikes the ground?

22. What is the name of the largest moon of Neptune?

23. What is the name of the iconic long-lasting storm on Jupiter?

24. What is the solar wind?

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

26. What is the term for the process by which plants convert carbon dioxide and water into glucose and oxygen using sunlight?

27. What is the name of the asteroid belt object that was visited by the Dawn spacecraft in 2011?

28. Which spacecraft conducted a close-up study of Ceres, revealing bright spots and other intriguing features on its surface?

29. 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?

30. What characteristic makes Mercury unique among the terrestrial planets?