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