If a planetary body (such as a rocky body bigger than about 400 km diameter) is big enough, it will be spherical. Why is this: a Bodies this large will all collide with each other and fit together in such a way as to form a spherical shape. b Large planetary bodies will have volcanic eruptions that will fill in any low places on their surfaces and make them spherical. c Larger, more massive bodies have gravity that is too strong to allow them to have irregular shapes. d Anything this large will attract so many meteors to it that it would have all its irregular corners knocked off.
If a planetary body (such as a rocky body bigger than about 400 km diameter) is big enough, it will be spherical. Why is this: a Bodies this large will all collide with each other and fit together in such a way as to form a spherical shape. b Large planetary bodies will have volcanic eruptions that will fill in any low places on their surfaces and make them spherical. c Larger, more massive bodies have gravity that is too strong to allow them to have irregular shapes. d Anything this large will attract so many meteors to it that it would have all its irregular corners knocked off.
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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If a planetary body (such as a rocky body bigger than about 400 km diameter) is big enough, it will be spherical. Why is this:
a Bodies this large will all collide with each other and fit together in such a way as to form a spherical shape.
b Large planetary bodies will have volcanic eruptions that will fill in any low places on their surfaces and make them spherical.
c Larger, more massive bodies have gravity that is too strong to allow them to have irregular shapes.
d Anything this large will attract so many meteors to it that it would have all its irregular corners knocked off.
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