Test 3 Flashcards
Covered with a colorful layer of sulfur compounds deposited by frequent explosive eruptions from volcanic vents. These eruptions resemble terrestrial geysers
Io
A ring of electrically charged particles circling Jupiter at the distance of Io’s orbit. Interactions between this ring and jupiter’s magnetic field produce strong radio emissions
The Io torus
While composed of primarily rocks, this Gallilean moon is covered with a smooth layer of water ice. There are hardly any craters that may indicate that it used to be geologically active. There may be an ocean beneath the frozen surface.
Europa
Two types of terrain are found on the icy surface of this moon. Areas of dark, ancient, heavily created surface and regions of heavily grooved, light-colored, younger terrain. Probably has a metallic core. Has a strong magnetic field and magnetosphere
Ganymede
A heavily created crust of water ice. The surface shows little sign of geologic activity, because there was never any significant tidal heating of this moon. May have a shallow subsurface ocean.
Callisto
The largest Saturnian satellite is a terrestrial world with a dense nitrogen atmosphere. A variety of hydrocarbons are produced there by interactions of sunlight with methane. These compounds form an aerosol later in the atmosphere and fall as gentle rain on the surface.
Titan
Jupiter has a total of ____ satellites, Saturn has a total of ___
63, 61
True or false, Uranus was discovered but chance, while Neptune was discovered at a location predicted by applying Newtonian mechanics.
True
Both Uranus and Neptune have atmospheres composed of
Hydrogen, helium, and Methane
What gives Uranus and Neptune their greenish-blue color
Methane absorbing red light
Why is there much more cloud activity seen on Neptune than on Uranus?
Uranus lacks a substantial internal heat source
What kind of core does Uranus and Neptune have
A rocky core surrounded by a mantle of water and ammonia
What generates the magnetic fields of Uranus and Neptune
Electric currents from the mantle
What caused Uranus’s strange 59 degree angles axis?
Possibly a collision with a planet-like object
Which one of Neptune’s moon has a young, Ice surface indicative of tectonic activity. The Energy for this activity may have been produced by tidal heating that occurred when this moon was captured by Neptune’s gravity into a retrograde orbit. This moon has a tenuous nitrogen atmosphere. It also does not rotate along neptune’s orbit
Triton
The relics of planetesimals that failed to accrete into a full-sized planet, thanks to the effects of Jupiter and other Mars-sized objects
Asteroids
