Chelsea Esposito Quiz

Chelsea Esposito

March 11, 2013

1. Jupiter and Saturn are mostly composed of Helium and Hydrogen gas. Uranus and
Neptune are mostly hydrogen compounds: water, methane, and ammonia with some
Hydrogen, Helium, and rock.

2. Jovian planets have no solid surface and their layers underneath are high
pressure and temperature. The cores are made of hydrogen compounds, metal, and
rock.

3. All Jovian planets have strong winds and storms. Jupiter has a storm that has been
active for 300 years.

4. All kinds of moons, small, medium, and large. The medium and large moons have
enough self-gravity to be spherical, have substantial amounts of ice, are formed in
orbit around Jovian planets, and have circular orbits in same direction as planet
rotation. Small moons are far more numerous than the medium and large moons,
but they do not have enough gravity to be spherical, and are considered “potato-
shaped”.

5. Volcanic eruptions continue to change Io’s surface, making it geologically active.

6. Radar imaging of Titan’s surface has revealed dark, smooth regions that may
be lakes of liquid methane. Almost all show evidence of past volcanism and/or
tectonics. Fountains of ice particles and water vapor from the surface of Enceladus
indicate that geological activity is ongoing.

7. Rock melts at higher temperatures and only large rocky planets have enough heat
for activity. Ice melts at lower temperatures, and tidal heating can melt internal ice,
driving activity.

8. Saturn’s rings are made up of numerous, tiny individual particles. They orbit over
Saturn’s equator, and they are very thin.

9. They formed from dust created in impacts on moons orbiting those planets. Jovian
planets all have rings because they possess many small moons close in.

10. I did some research and I read that two scientists named Pat Cassen and Ray
Reynolds predicted the volcanoes.