30.2 Flashcards
what is the smallest and closest planet to the sun
Mercury
second closest planet to the sun
Venus
what is the 3rd planet from the sun
Earth
4th planet from the sun
Mars
how long ago did the solar system form
4.6 billion years ago
what type of atmosphere does Mercury have
no true atmosphere
what type of atmosphere does Venus have
dense atmosphere
what is Earths sister planet
Venus
water is allowed to exist in what form
solid, liquid, or gas
what is mars know as
the red planet
why is mars red
iron-oxide
how many moons does mars have
two
what are the names of mars two moons
Phobos and Deimos
what does Phobos and Deimos mean
Fear and Panic
what was spirit and opportunity’s mission
to find liquid water
what did mars reconnaissance orbiter discover
sediment layers and gullies
what did Mariner 9 discover
Valles Marineris and extinct Volcanoes
what did viking 1 and 2 do
they photographed the surface of mars
what did global surveyor do
looked at the walls of Valles Marineris
what did odyssey do
provided evidence such as water and frost underneath the soil
what did mars pathfinder and sojourner gather
that iron in mars crust may have been leached out by ground water
where did Curiosity land
the Gale Crater
what was the goals of Curiosity
Investigate Climate and Geology- Collect evidence of microbial life- Planetary habitability Studies
