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7 Cards in this Set
- Front
- Back
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What is the difference among comets, meteoroids, and asteroids?
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Comets are a small body of ice, rock, and dust loosely packed together. Meteoroids are similar to asteroids since they are made of the same material, but asteroids are much bigger than meteoroids.
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What is the Torino Scale?
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The Torino Scale is a system that allows scientists to rate the hazard level of an object moving towards Earth.
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Explain the difference among meteoroids, meteors, and meteorites.
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A meteorite is a meteorite when it enters Earth's surface without burning up completely. A meteor is a bright streak of light which is caused by a meteorite burning up in Earth's atmosphere. Meteroids are relatively small, rocky bodies that travel through space.
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What is a crater and how do scientists tell the age of them?
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A crater is a bowl shaped depression in a surface caused by an explosion or an impact of a body, such as a meteoroid. Scientists can tell the age of them by _____________.(?)
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What is an astronomical unit?
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It is the distance from the Earth to the sun and used to measure distances in space.
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Explain prograde and retrograde rotation.
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Prograde rotation is having a rotational movement that is similar to most bodies in the celestial system. Retrograde rotation is the opposite, moving the other way, or counter-clockwise to speak.
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What are the parts of a comet?
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They are the coma, nucleus, ion tail, and dust tail
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