In 2006, the International Astronomical Union (IAU) introduced a new classification for small solar-system bodies that are not satellites but orbit the Sun called __________, and placed Pluto, along with several other such bodies, in that category.

The planet Jupiter has the largest moon (Ganymede) and the most moons (67 known) of any planet in the solar system. Most moons are small, but of the 181 known moons in the solar system, Earth’s moon is larger than all but __________ other moons and is even larger than Pluto.

This planet has the largest known volcano in the solar system, Olympus Mons.

All planets in our solar system __________ counterclockwise around the Sun while each also __________ on its own axis.

Which of the following is usually burned up in the Earth’s atmosphere?

Which planet is known for its rings?

Which of the following is typically the largest of the four?

Clouds are buoyant masses of __________.

If a theory withstands many well-designed experiments over time, it may become accepted as a scientific law, a concise statement in words or mathematical equations that describes __________.

A(n) __________ is the blocking of the light of one celestial body by another.