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27 Cards in this Set
- Front
- Back
Planets with orbital semimajor axes less than 0.1 AU are called: |
Hot |
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All the terrestrial planets lie inside the asteroid belt |
True |
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A solid body from the outer solar system that arrives intact on the Earth's surface is called: |
Meteorite |
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All the planets revolve around the Sun in the same direction, except Venus and Uranus |
False
|
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The Trojan asteroids are found |
Sixty degrees ahead of behind Jupiter, sharing its orbit around the sun. |
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As the solar nebula contracts, it: |
Spins faster due to conservation of angular momentum |
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Long period comets are believed to originally come from: |
The Oort cloud |
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Streaks of light made when small debris hits our atmosphere are called: |
Meteors |
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According to the solar nebula theory, planets: |
Are a common result of start formation |
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Meteor showers are |
Usually annual event, as the orbits again intersect AND Caused by the Earth passing near the orbit of an old short-period comet |
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Which of the following have an icy composition |
Comets |
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Exoplanets known as super-earths: |
Have masses 2-10 times greater than that of earth |
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The nucleus of a comet is typically |
A few km in size and ver low density |
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The _______ is a vast spherical array of long period comet nuclei far beyond the orbit of Neptune |
Oor cloud |
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All planets lie in orbits close to the ______ plane |
Ecliptic |
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So far, beyond the solar system the extrasolar planets found have been mostly |
Large jovians very close to their star |
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Meteoric material dates the formation of the solar system at about: |
4.6 billion years |
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The Manicougan reservoir near Quebec is an example of: |
A large meteor impact |
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Density is identified as: |
The mass of an object divided by its volume |
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Which of the following are the Jovian planets |
Jupiter, Saturn, Uranus and Neptune only |
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Relative to the comet, the direction of the ion tail tells us: |
The direction of the sun |
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The most distant objects in our solar system are: |
The Oort Cloud |
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In some cases, we have seen extrasolar planets pass in front of their stars |
True |
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In composition, the ________ planets have rocky materials like the asteroids |
Inner (terrestrial) |
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Due to their great masses, all four jovian worlds are much denser than earth |
False |
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The ___ belt bodies orbit beyond neptune, but like the planets stay close to the ecliptic plane and in fairly circular orbits |
Kuiper |
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Which planet by itself contains the majority of mass of all the planets? |
Jupiter |