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Lecture 7 Venus
cambridge Lang
14
Astronomy
Undergraduate 1
10/25/2009

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Cards

Term
when is seen?
Definition
twilight
Term
is it bright?
Definition
its the brightest
Term
mass and size
Definition
similar to earth
Term
satellites
Definition
none
Term
rotation
Definition
backwards retrograde
venus day longer than year
Term
atmostphere
Definition
hot, thick
CO2
sulfuric acid
active volcanoes = H2O + SO2
wind really high up
Term
magneticism
Definition
none
thick atmosphere deflects solar wind
Term
surface
Definition
85% smooth, low plains
resurfaced 750 million years ago by volcanoes
15% super tall volcanoes
rising heat = vertical motions (earth = sideways)
one solid plate
Term
effect of atmosphere on surface
Definition
craters big and asymmetric
Term
water?
Definition
none
Term
arachnids
Definition
elongated circles with cliffs onperimeter
lava seeping into cracks
dykes and fracture
Term
coronae
Definition
enormous circles with cliffs on perimeter
due to surface upwelling
Term
names of surface features
Definition
godesses + dead women
Term
pressure
Definition
crushing
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