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7 Cards in this Set
- Front
- Back
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What are some of the major differences of Pluto?
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It is shaped differently
It consists of different things It was the only planet located in the Kuiper belt |
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When can we determine an object's mass in space?
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If we can observe its gravitational effect on another object
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Charon
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Pluto's moon
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What is significant about the size of Charon?
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Because it is so large Scientists believe it was formed by a large comet crashing into Pluto. The comet blasted away Pluto's outer layers and they flew into its orbit and reformed into Charon.
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How long ago was the extinction of dinosaurs?
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65 million years ago
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Where was the collision which caused the extinction of dinosaurs?
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In Mexico
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What is some proof of an asteroid or comet collision on Earth?
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-High abundances of metals not usually found on Earth
-"Shocked quartz" which indicates a high-pressure collission -Spherical rock droplets which are formed when molten rock cools and solidifies -Soot that appears to hve been produced by forest fires |
