30.2 vocabulary Flashcards
(24 cards)
smallest and closest planet to the sun
mercury
third planet to the sun
earth
fourth planet from the sun
mars
second closest planet to the sun
venus
how did the solar system form
a nebula collapsing
how long ago did the solar system form
4.6 billion years ago
what type of atmosphere does mercury have
it does not have a true atmosphere
what is earths sister planet
venus
what is venus´ atmosphere like
very dense and very hot
temperatures on earth allow water to exist in which states
solid, liquid, gas
what is another name for mars
the red planet
why is mars red
because if the iron oxide
how many moons does mars have
2
what does Phobos mean
fear
what does deimos mean
panic
what was spirit and oppertunity´s mission
to find liquid water
what did mars reconnaissance mission find
sediment layering and gullies
what did Mariner 9 space probe discover
Valles Marineris, a large canyon, and extinct volcanoes
what was the mission of viking 1 and 2
they photographed the entire surface of mars
The global surveyor did what
they discovered that the walls had distinct layers
what did the odyssey discover
water is frost under a thin layer of soil
what data was gathered by Sojourner
that iron in mars crust may have been put out by ground water
where did the curiosity rover land
the gale crater
what were the goals of the rover
investigate climate and geology, to collect evidence for microbial life, study planet habitability
