Solar System Online Test

1. What is the phenomenon called when the solar wind compresses Earth's magnetosphere on the side facing the Sun?

2. What is the average surface temperature of Pluto?

3. Which space probe was the first to fly by Jupiter and Saturn and provided close-up images of their moons, including Io's volcanic activity?

4. What is the name of Kepler's second law of planetary motion?

5. Which moon of Uranus is known for its heavily cratered surface and bright, icy terrain?

6. Which dwarf planet is known for its highly eccentric orbit that takes it far beyond the orbit of Pluto?

7. Which space probe was launched to study Pluto and the Kuiper Belt objects beyond it?

8. Which moon of Jupiter is the most heavily cratered body in the Solar System, indicating its ancient surface?

9. Which space probe conducted a flyby of Pluto in 2015, providing the first close-up images of the dwarf planet?

10. What is the lithosphere?

11. What is the name of the hexagonal cloud pattern observed at Saturn's north pole?

12. Which space probe recently completed its mission by crashing into the surface of Comet 67P/Churyumov-Gerasimenko?

13. How many moons does Mars have?

14. Which space probe is currently studying Jupiter's atmosphere, magnetic field, and composition?

15. Which moon of Saturn is believed to have a subsurface ocean beneath its icy crust?

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

17. Which dwarf planet was the first to be discovered beyond Pluto's orbit in the Kuiper Belt?

18. How do solar storms, like coronal mass ejections, affect the occurrence of auroras?

19. What effect does tidal heating have on celestial bodies?

20. Which comet made a close approach to Earth in 1996, becoming widely visible to the naked eye?

21. What is the name of the dark, vortical storm system observed at Neptune's equator?

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

23. What is the name of the spacecraft that discovered geysers erupting from beneath the icy surface of Saturn's moon, Enceladus?

24. Which layer of the Earth's atmosphere is closest to the planet's surface?

25. What is the name of the region beyond the orbit of Neptune where a vast collection of icy bodies, including Pluto, reside?

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

27. Which gas giant planet has the fastest winds in the Solar System, with wind speeds reaching up to 2,100 kilometers per hour (about 1,305 miles per hour)?

28. What is the name of the massive, swirling storm system observed at Neptune's equator?

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

30. What is the name of the large, high-altitude vortex observed at Venus' south pole?