6 asmr
Compared to the Earth, Mars is about ...
1/2 the size
The hypothesis that other planets are actually worlds like the Earth is known as ...
The Plurality of Worlds
Which of the following provides observational evidence that Mars has weather and an atmosphere?
all of the above
The astronomer Schiaparelli was convinced that he could observe __________ on Mars.
canals
A respected scientist and mathematician, Carl Gauss, recommended that we build a large right triangle on the surface of the Earth in order to ...
communicate with Martians
Mars comes closer to Earth than any other planet.
fa;se
Galileo was able to observe polar caps on Mars with his first telescope observations.
false
The Phoenix Lander found __________ just under the surface of Mars.
frozen water icew
The largest mountain in the solar system is ...
olym
In many ancient cultures, the "red planet" was named after ...
the god of war
Why doesn't Mars have active volcanoes today?
the planet lost its internal heat to cold space
The Spirit and Opportunity rover missions continued for several years despite being designed to operate for only ...
90 days
Some early observers thought that changes in the large dark regions on the surface of Mars were caused by ...
the growth of vegetation
Why does liquid water boil away when exposed to the Martian atmosphere?
the low air pressure lowers the boiling point
Virtually every planetary scientist agrees that liquid water did flow at one time on ancient Mars.
true
The first US missions to land on Mars were the _____________ missions.
viking
Orson Well's famous radio broadcast of ________________ caused a minor panic among listeners that a real alien invasion was underway.
war of the worslds
The presence of ___________ on the surface of Mars provides additional evidence for a wet Martian past.
blueberies
Observing Mars is difficult because...
it is so small on our night sky
The __________ missions were the first to fly-by Mars.
mariner