Astronomy Flashcards
(115 cards)
Mercury has “weird terrain” directly opposite it’s huge Caloris impact basin.
True
Mercury had the widest variation in surface temperatures between night and day of any planet in the solar system.
True
Venus can be seen during daytime when it is near greatest brilliancy.
True
Compared to earth, Venus spins vary rapidly.
False
The terra of Venus are rare but large continent size uplifted regions over a low surface.
True
The surface temperature of Venus is nearly 750K, even hotter than mercury.
True
How do the atmospheres of the moon and mercury compare?
Neither body had a permanent atmosphere
The lunar mare (Maria) are found:
Almost entirely on earth side, where the crust was
The lunar highlands are:
More rugged, heavily cratered, and older the the lunar mare
What is the of the moons orbital and rotational periods?
They are equal
Mercurys surface most resembles that of which other body?
Moon
Mercurys Caloris basin is aptly names, since?
It is hottest region, turning to face the sun when mercury is at perihelion.
Venus’ rotation:
Takes longer than its orbit around the sun
Through radar observations it was found that Venus’
Rotation on its axis is retrograde
Which statement is true of Venus’ surface?
There are two continent sized uplands
Venus had a feature names Aphrodite terra. What is this feature?
A continental-sized plateau
Maxwell mons on Venus is a huge:
Shield volcano
The main problem spacecraft have encountered in landing on Venus is:
The extremely high
While mads is half as big as the earths diameter, it’s surface gravity is only about 40% as strong as the one g (earths gravity) we experience here on earth.
True
The low surface gravity helps Martian volcanoes grow to great heights.
Tru
The polar caps and dust storms of mars can be seen with earth based amateur telescopes.
True
The seasonal polar caps on Mars, which grow and shrink over the year, are primarily carbon dioxide.
True
The surface of mars is surprisingly smooth and featureless.
False
Mars has a weak magnetic field.
True