section 2 chap 30 Flashcards
smallest and closest planet from the sun
Mercury
second planet from the sun, has a dense atmosphere of mostly carbon dioxide and very high surface temperatures
Venus
third planet from the sun, the only planet in the solar system know to have life, and were water exists as a solid, liquid, and gas
Earth
fourth planet from the sun, called the red planet because of high concentrations of iron oxide
Mars
How long ago did the solar system form?
4.6 billion years ago
What type of atmosphere does Mercury have?
A large iron core and thin outer layers
What type of atmosphere does Venus have?
A very dense atmosphere
Which planet is referred as Earth’s sister planet
Venus because their sizes and masses are almost identical
Temperatures on Earth allow water to exist as what state?
Solid, Liquid, and gas
What is Mars is also know as or called
Red planet
Why is Mars red?
Iron oxide in some weathered rocks
How many moons does Mars have?
2
What are the name of Mars the moons?
Phobos and Deimos
What does Phobos mean?
Fear
What does Deimos?
Panic
What was Spirit and Opportunity mission?
Search of liquid water
What did Mars Reconnaissance Orbiter discover
Sediment layering and gullies
What did Mariner 9 discover?
Valles Marineris and Volcanoes
What is Valles Marineris?
a large canyon
What did Viking 1 and Viking 2 do?
Photograph the surface of Mars
What did Global Surveyor do?
Showed that the Valles Marineris have layers similar to the Grand Canyon.
What did the Mars Odyssey do?
Provided evidence for water as frost beneath a thin layer of soil.
What Data did the Mars Pathfinder and its rover, Sojourner gather?
that iron in Mar’s crust may have leached out but groundwater.
Where did the Curiosity rover land?
Mars
What goals did Curiosity include?
investigate climate and geology, collected evidence for microbial life, planetary habitability studies
