Introducing the Solar System Crossword Puzzle

QUESTIONS LIST:

• saturn : _ is a gas giant planet that is smaller than jupiter but larger than neptune.
• moon : all but two planets in the solar system have a natural satellite, or _ .
• axis : one day is the time it takes a planet to rotate on its _ .
• venus : a planet that formed closer to the sun than earth but not closest to the sun is _ .
• star : the sun is a(n) _ .
• gas : the four outermost planets in the sun’s orbit are mostly made of liquid and _ .
• satellite : a _ is an object that orbits a planet.
• asteroid : _ is a small rocky body that orbits the sun.
• neptune : _ is the planet farthest from the sun.
• solar system : planetesimals collided, stuck together, and eventually combined to form all the other objects in the _ _ .
• cloud : the solar system formed from a giant _ of gas and dust.
• gravity : the solar system began to form as _ pulled rock, ice, and gas together.
• astronomical : scientists use the _ unit to measure distances within the solar system.
• jupiter : _ is the largest planet in the solar system.
• pluto : _ , once the ninth planet in the solar system, is now considered a dwarf planet.
• billion : scientists think the solar system formed about 4.6 _ years ago.
• mercury : _ is the smallest planet in the solar system.
• comet : a _ is a loose, icy body with a long, narrow orbit.
• sun : about 99.85 percent of the mass of the solar system is contained within the _ .