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Impact Formation of the Moon
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1
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What happened to the Mars-sized planet that collided with the Earth 4.55 billion years ago?
A)it glanced off of the Earth and flew off into space
B)it was completely destroyed and fell into the Earth
C)it was completely destroyed and its debris formed the Moon
D)it excavated the Moon from the body of the Earth
E)it was captured in orbit around the Earth to become the Moon
2
What happened to the core of the impacting planet?
A)it flew off into space
B)it formed the core of the moon
C)it was vaporized
D)it fell into and merged with the core of the Earth
E)both a and c
3
What material ended up forming the Moon after the impact?
A)the core and mantle of the impacting planet
B)the mantle of the impacting planet and the mantle of the Earth
C)the core of the impacting planet and the mantle of the Earth
D)the core of the impacting planet and the crust of the Earth
E)the core of the impacting planet and the core of the Earth
4
What happened to the Earth as a result of the Moon-forming collision?
A)the Earth was completely remelted
B)the Earth's mantle was vaporized
C)the Earth's core was ejected from the planet
D)the Earth was completely vaporized
E)the Earth was ejected from its orbit
5
What formed the lunar maria?
A)the eruption of large expanses of volcanic lava covering lunar plains
B)the eruption of large expanses of volcanic lava filling ancient impact basins
C)the impact uplift of long ridges of lunar mountains
D)the excavation of deep impact craters filled with meteoritic debris
E)the formation of radial faults around craters produced by meteor impacts





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