1. This moon contains Loki, the most powerful volcano in the solar system. Io Ganymede Mars Europa

2. Which Galilean moon was the last to be discovered? Io Ganymede Europa Callisto

3. This Galilean moon contains Gipul Catena, a series of impact craters stretching across in a straight line. Europa Ganymede Callisto Io

4. Containing both rough & cratered surface, this moon seems to have a history of tectonic movement! Ganymede Callisto Europa Io

5. The brightest of the Galilean moons, this planet may have water ice, and possibly extraterrestrial life. Io Callisto Europa Ganymede

6. Which Galilean moon is yellow and red? Callisto Europa Io Ganymede

7. This is the only moon in our solar system to have a global magnetosphere. Europa Io Callisto Ganymede

8. How many of the Galilean moons can you see with a small telescope? 4 2 1 3

9. List the Galilean moons from largest to smallest in size. Ganymede, Europa, Callisto, Io Callisto, Io, Ganymede, Europa Callisto, Ganymede, Europa, Io Ganymede, Callisto, Io, Europa

10. List the Galilean Moons in their order from Jupiter. Io, Callisto, Europa, Ganymede Ganymede, Europa, Callisto, Io Io, Europa, Ganymede, Callisto Ganymede, Io, Europa, Callisto