1) The sun is a a) star b) planet c) moon 2) What planet is this one? a) Neptune b) Mars c) Jupiter 3) ... is the closest planet to the Sun. a) Earth b) Mercury c) Venus 4) ... is sometimes referred to as Earth's sister planet. a) Mars b) Venus c) Neptune 5) ... is the last terrestial planet. a) Earth b) Saturn c) Mars 6) ... has only one moon. a) Earth b) Jupiter c) Neptune 7) ... rotates on its side. a) Uranus b) Jupiter c) Neptune 8) One of its Moon, Triton, orbits the planet in the opposite direction to this planet's spin. a) Uranus b) Neptune c) Saturn 9) Its rings are made of mostly of ice crystals. a) Mars b) Saturn c) Mercury 10) ... is the largest planet. a) Jupiter b) Saturn c) Earth

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