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astronomy test 2
chapter 9
24
Astronomy
Undergraduate 1
11/04/2011

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Cards

Term
Venus's permanent retrograde rotation about its axis results in the planet
Definition
having its north pole below the plane of the ecliptic
Term
What is the main constituent of the atmosphere of Venus
Definition
sulfuric acid
Term
what is the result of the Greenhouse effect on the surface environment of Venus
Definition
It has raised the surface temperature by hundreds of degrees Celsius
Term
The largest volcanic structures on Venus are called
Definition
coronae
Term
Venus' rotation period is longer than its year (true or false)
Definition
true
Term
Venus's atmospheric temperature is
Definition
hotter than temperatures on Mercury
Term
venus's atmosphere
Definition
is composed mostly of carbon dioxide
Term
The only spacecraft to successfully land on Venus were
Definition
russian veneras
Term
compared with Earth, Venus has a level of plate tectonic activity that is
Definition
virtually nonexistent
Term
Which statement is true of Venus's surface
Definition
there are two continent sized uplands
Term
how long is one Venutian day
Definition
117 Earth days
Term
If Venus were covered with water like Earth, what proportion of its surface would be covered by land
Definition
less than half the proportion of Earth
Term
What is the cause of Venus's characteristic yellowish hue
Definition
The trace amounts of sulfur in its atmosphere
Term
What keeps the surface of Venus looking so young
Definition
Ongoing volcanism
Term
Which of the following best describes Venus's rotation
Definition
Slow and retrograde
Term
Which of the follow features is unique to venus
Definition
coronae
Term
In the 1950s, radio observations first hinted, and probes later established, that Venus emitted a blackbody spectrum characteristic of a temperature near what value
Definition
730K
Term
All but one of the following have been observed on Venus and provide evidence of volcanic activity there. Which one has NOT been observed
Definition
Actively erupting volcanoes
Term
How fast do the upper-level winds over Venus move
Definition
300-400km/h
Term
What did the surface of Venus look like in the photographs taken by the Soviet Venera spacecraft
Definition
Flat rocks, small rocks, some eroded, and some finer material
Term
What is the approximate sidereel rotation period of Venus about its axis (note that + = prograde and - = retrograde)
Definition
-243 Earth days
Term
Which of the following characteristics describe the conditions that prevail on the surface of Venus
Definition
Hot, windy, and dusty
Term
Which of the following statements about the atmosphere of Venus and its contents is NOT true
Definition
The clouds of Venus are made of highly reflective frozen carbon dioxide
Term
The reflectivity (also called albedo) of Venus in the visible region is about what percent
Definition
70 percent
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