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APSC 151 Midterm Questions And Answers

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The average thickness of oceanic lithosphere is closest to: a) 5km b) 10km c) 30km d) 100km e) 1000km ~ d) 100km You are in Iceland, witnessing a lava flow. What is most likely to be the composition of the lava? : a) felsic b) mafic c) ultramafic d) iron e) intermediate ~ b) mafic You are in the middle of the Pacific Ocean on a ship equipped to drill holes straight down into solid rock at the bottom of the sea. You are trying to drill such a hole down to the Mohorovivic Discontinuity. How far will you have to drill from the sea bottom in order to reach the Moho?: a) 2 km b) 5 km c) 10 km d) 30 km e) 100 km ~ b) 5 km

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Uploaded on
August 5, 2024
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Written in
2024/2025
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APSC 151 Midterm Questions
And Answers

Who said: "All life and all the material parts of the Earth's Surface make up a

single system, a king of meta-organism, and a living planet."?


a) Yogi Berra


b) James Lovelock


c) Brad Allenby


d) Thomas Midgely


e) Sir Thomas Tredgold


✓✓✓✓~ b) James Lovelock




What is the present human population of Earth (apporximately)?


a) 1 billion


b) 3 billion


c) 7 billion


d) 10 billion

, e) 14 billion


✓✓✓✓~ c) 7 billion




The Atlantic Ocean is opening up at a rate closest to;


a) 0.05 cm/year


b) 5 cm/year


c) 50 cm/year


d) 5 meters/year


e) 50 meters/year


✓✓✓✓~ b) 5 cm/year




By weight, 90% of the earth is made up of four elements. These four, in

decreasing order of abundance from left to right, are:


a) Si, O, Al, Fe


b) O, Fe, Si, Ni


c) O, Si, Al, Fe


d) Fe, O, Si, Mg


e) O, Si, Fe, Al

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