30.2 Flashcards
The smallest and closest planet to the sun
Mercury
The second closest planet to the sun
Venus
The third planet from the sun
Earth
The fourth planet from the sun
Mars
How did the solar system form?
From a nebula collapsing
How long ago did the solar system form?
4.6 billion years ago
What type of atmosphere does Mercury have?
It has no true atmosphere
What is earths sister planet?
Venus
What is Venus’ atmosphere like?
Very dense, very hot
The temperatures on earth allow water to exist as what state?
liquid, solid, gas
What is another name for Mars?
The Red Planet
Why is Mars red?
iron oxide
How many moons does Mars have?
2
What are the names of the moons?
Phobos, Deimos
What do the names mean?
Phobos- Fear, Deimos- Panic
What was Spirit and Opportunity’s mission?
To find liquid water
What did Mars Reconnaissance Orbiter discover?
sediment layering and gullies
What did Mariner 9 Space Probe discover?
Valles Marineris, extinct volcanoes
What was the mission of Viking 1 and Viking 2?
photographed the entire surface
What was Global Surveyor’s mission?
discovered that valles marineris walls were close to the Grand Canyon
What did the Odyssey provide evidence of?
water as frost underneath a thin layer of soil
What data was gathered by the mars pathfinder and its rover sojourner?
iron in mar’s crust may have been leached out by groundwater
Where did the curiosity rover land?
the Gale crater
What were the goals of curiosity?
investigate climate and geology, to collect evidence for microbial life, study for planetary habitability
