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30 Cards in this Set
- Front
- Back
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When you go to the very end of the movies from Mars what do you see between the Landers and the rovers?
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the tracks of the rovers
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what has cause Earth's atmosphere to remain so bizarre?
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plants regenerating oxygen
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Why are transits more difficult to see than the shadows cast by the moons?
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The moons are bright and the shadows are black
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Where did Saturn's rings come from?
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Maybe a moon got too close to Saturn
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What does Venus have in abundance
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volcanoes
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as an object's distance increases, what happens to its angular size?
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it's angular size decreases
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There might be suitable enviornment for life on Venus...
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in the clouds
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The canyon on Mars that would stretch across the entire United States is known as
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Valles Marianeris
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How have astronomers determined the distance to Venus very precisely?
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by bouncing radar beams off Venus
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The least dense planets are.
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the four giant planets.
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Ceres, the largest asteroid, has recently been re-classified, along with Pluto, as a...
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dwarf planet
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TNO: very eccentric orbits
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scattered disk objects
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TNO: orbits with very small eccentricity
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classical Kuiper Belt objects
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TNO: part of the orbits are far beyond the Kuiper Belt
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detached objects
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TNO: orbital periods linked with Neptune
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resonant Kuiper Belt objects
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In recent months the Sun has continued to
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be "quiet" with little magnetic activity
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after years of observing, scientists have figured out that sunspots are...
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areas of strong magnetic lines
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Why are spacecraft able to pass through the asteroid belt without getting hit?
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the asteroids are very far apart
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Why are most meteors seen after midnight?
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the local part of the Earth is facing into the direction of orbital motion
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the two largest known objects found in the Kuiper Belt are...
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Eris and Pluto
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many meteor showers are due to...
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Earth passing through the orbit of a comet
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why are the inner planets small and rocky while the outer planets are large and gaseous?
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closer to the sun the high temperature drove away most of the gases
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the time it takes for the sun on the meridian to return to the meridian is called
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a solar day
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the seasonal temperature on the Earth depends on...
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the amount of heat received from the Sun
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When we observe the Sun through an optical telescope, what part do we see?
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photosphere
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why is a comet's tail in front of the comet as it moves away from the Sun?
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the solar wind pushes the gas and dust away from the Sun
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sunspots temperature
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4340K
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core temperature
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16 million K
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photosphere's temperature
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5840K
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corona's temperature
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1 to 2 million K
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