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Question & Answer
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They cause the bodies to collide with each other, increasing their number.
They gravitationally perturb objects, sending some into the Oort Cloud while ejecting others.
They have no effect on the Oort Cloud, which is stable and isolated.
They attract bodies towards the Sun, reducing the Oort Cloud's size.
Understanding the Answer
Let's break down why this is correct
Outer planets have strong gravity that can nudge icy bodies around. Other options are incorrect because People often think collisions make more bodies, but actually collisions break pieces into smaller parts, reducing the total count; The idea that the cloud is isolated ignores the fact that the Sun’s gravity and planetary pulls keep acting on the bodies.
Key Concepts
Solar System Reservoirs
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Deep Dive: Solar System Reservoirs
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Definition
Solar System Reservoirs refer to regions like the Oort Cloud, where vast numbers of icy bodies reside. These bodies, including comets, originate from gravitational interactions with outer planets and can be influenced by nearby stars. Studying these reservoirs helps us understand the dynamics of solar system formation and evolution.
Topic Definition
Solar System Reservoirs refer to regions like the Oort Cloud, where vast numbers of icy bodies reside. These bodies, including comets, originate from gravitational interactions with outer planets and can be influenced by nearby stars. Studying these reservoirs helps us understand the dynamics of solar system formation and evolution.
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