15 Mars
what evidence has been found on Mars that supports the theory that life once existed on the planet
all of the above
much like earth, Mars has very concentrated wind storms that on mars blow dust around and leave complex curving trails on the surface they pass over. these storms are called
dust devils
ice found at the martian poles can sometimes to be upset and cause huge avalanches which have even been seen from space and are most likely caused by sublimation of carbon dioxide
false
while there is evidence that life may have once been on Mars it is now much too hot to sustain any type of life
false
why does mars no longer have strong atmosphere and by extension liquid water
the planets internal dynamo shut down causing mars to lose its magnetic field and allowing solar wind to strip of its atmosphere
in terms of overall terrain one half of mars is significantly different from the rest how are the halves split and how are they different
they are split by top and bottom. the northern hemisphere is mostly smooth plains while the southern hemisphere is cratered highlands
at times from the planets surface Mars's can be seen to
transit the sun like we can see Venusdo.
if we were able to put humans on Mars our understanding of the planet could very quickly dwarf everything we already know about it as humans can collect necessary data much more quickly than any robots we are capable of making
true
the martian atmosphere is so weak that since beginning it's orbit around the planet the mars reconnaissance orbiter has managed to find the impacts that were not there when it began its orbit
true
while the martian atmosphere is sparse it is still thick enough to interact with the solid surface of the planet
true
Near mars's poles there are frozen ice caps made up primarily of _____, and covered by _____ in the winter
water ice, dry ice.
the atmosphere on Mars is about __% the surface of that on earth and is made primarily of _______.
1, carbon dioxide
how many lions does mars have
2
using the model that assumes there were once plate tectonics on Mars what is thought to have formed the tharsis bulge?
a hot spot in the planets mantle pushed out the crust in this area in this area similar to how we think the hawaiian islands were formed
why do we currently believe the discrepancy between the two halves of mars described in the previous question exist
a huge collision left a depression on on side of the planet which filled with lava and cooled to form a smoother surface
what is Valles Marneris and what is the leading theory for how it was formed
a huge crack in the crust larger than the grand canyon. it is thought to have been formed as a radial crack as a result of the creation of the Tharsis Bulge
how big is Mars compared to Earth
it has a diameter anout half that of earths
what happens to the top of mars's polar ice caps in the martian summer
it sublimates into carbon dioxide gas and creates huge wind storm throughout the planet as it rapidly enters the atmosphere
why is mars called the red planet
its surface is covered in rust qnd basaltic rock makinf jr allear res from earth
