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AST ch 11 study for final
Terms in this set (17)
What makes extremophile organisms different from other life forms?
They can live in extreme conditions, such as very low or high temperature environments, oxygen-poor environments, or environments with extremely low light levels.
Of what are Saturn's rings primarily made?
How do astronomers take such detailed, close-up pictures of ring systems?
They send satellites to the outer planets to take pictures for us
How do regular moons rotate in comparison to their planets?
In the same direction
what influence do pairs of shepherd moons have on the giant planets' rings?
They keep rings between the pair narrow by gravitational tugs on the ring particles
Most large regular moons probably formed
At the same time as their planets and grew by accretion
Which of the following can be used as an indicator of the age of a moon's surface?
Color of the surface
All of the above
Which of the following moons is thought to have a vast ocean of water beneath its frozen surface?
Lo has the most volcanic activity in the solar system because
It's interior is tidally heated as it orbits around Jupiter
How do particles from the moon Enceladus wind up in Saturn's E ring?
Water geysers erupt from the surface and expel them into space
All of the following ring structures are known to be created by shepherd moons except
Knots and kinks
Cryovolcanism occurs when
low-temperature liquids explode through the surface because of increasing pressure underground
Which object has been turned inside out numerous times, leading to situation where lighter elements have escaped, sulfur compounds compose the crust, and primarily heavier elements make up its core?
Which of the following moons do scientists believe most closely represents the primordial Earth, although at a much lower temperature?
What sort of liquids do astronomers believe exist on Saturn's moon, Titan?
Lakes of methane, ethane, and other hydrocarbons
If the Moon had active volcanoes,
the earth might have a ring
Particles that make up the rings of Uranus and Neptune are composed of
Organic material that has darkened because of bombardment by high-energy, charged particles
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