30.2 Flashcards
(25 cards)
The smallest and closest planet to the sun
Mercury
Second closest planet to the sun
Venus
third planet to the sun
Earth
Fourth planet from the sun
Mars
How did the Solar System form?
Nebula Collapse
How long ago did the system form?
4.6 billion years ago
What type of atmosphere does Mercury have?
No true atmosphere
What is earths sister planet?
Venus
What is Venus atmosphere like?
Very dense, very hot
The temperature on earth allow water to exist as what state?
liquid,solid,gas
What is another name for Mars?
Red planet
Why is Mars red?
iron oxide
How many moons does Mars have?
2
What are the names of the moons?
Phobos,Deimos
Phobos means-
fear
Deimos mean-
panic
What was Spirit and Opportunity mission?
find liquid water
What did Mars Reconnaissance Orbiter discover?
sediment layering and gullies
What did Mariner 9 space probe discover?
Valles Marineris and extinct volcanoes
What was the mission of Viking 1 and Viking 2?
photographed the entire surface
What was global Surveyors mission?
Discovered the Valles Marineris walls were similar to the Grand Canyons.
What did the Odyssey discover?
Water frost beneath a thin layer of soil
What data was gathered by the Mars pathfinder and its rover Sojourner
Iron and Mars crust leached out by groundwater.
Where did the Curiosity rover land?
Gale Crater
