1) What are comets mostly made of? a) hot, liquid rock b) rust metal c) dirty ice and dust d) poisonous liquid e) rocks f) ice 2) how many moons do mars have? a) 7 b) 13 c) 4 d) 2 e) 10 f) 14 3) What is the sun mainly made from? a) gas b) lava c) molten iron d) rock e) carbon dioxide f) metal 4) Where is the asteroid belt? a) between Jupiter and Saturn  b) between earth and mars c) between Mars and Jupiter d) between Mars and Jupiter  e) between Neptune and Uranus   f) between mercury and venus 5) what is the third planet from the sun? a) earth b) mercury c) venus d) Saturn e) mars f) neptune 6) Which planet is the hottest planet in the solar system a) mercury b) earth c) Saturn d) Jupiter e) mars f) venus 7) how many does moon need to orbit the earth ( in hours ) a) 660 b) 654 c) 560 d) 345 e) 877 f) 865 8) how many does it take for the earth to orbit the sun? a) 987 b) 318 c) 957 d) 786 e) 364 2/9 f) 365 1/4 9) Which planet has the shortest time to orbit the sun a) venus b) mercury c) Neptune  d) eath e) mars f) Jupiter 10) Which planet has the longest time to orbit the sun? a) mercury b) Jupiter c) venus d) mars e) Neptune f) earth

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