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Mars - Coggle Diagram
Mars
Possible evidence of life
tantalizing hints
atmosphere
thin
doesn't trap heat
average temperature below zero
microorganisms
air
mostly carbon dioxide
plants & other organisms can breath
water
only liquid water can support life
locked up as ice
streaks
grows on slopes
during Martian spring & summer
flowing water
disappears
when cold
riverbeds and landforms
carved by flowing water
Features
similar with Earth
fourth planet from the Sun
closest after the Earth
similar tilt
four seasons
terrestiral
made of rocks and minerals
natural features
has mountains and canyons
poles have ice caps
Researches
visible without a telescope
makes people wonder
early1900s
certain that life was there
series of canals
optical illusion
lines on telescope lenses
1970s
sent orbiters and landers
gathering data
1990s
NASA sent remote-controlled rovers
last 40years
flood of new information
climate&geology
has reddish color
Ancient Romans
named after god of war
surface is iron oxide
rust