Assuming that other planetary systems form in the same way as our solar system formed, where would you expect to find terrestrial planets?

Terrestrial planets will likely be located nearer the planetary system’s star than any jovian planets.

Compared to terrestrial planets, jovian planets are __________.

more massive and lower in average density

Which planet is approximately halfway between Pluto’s orbit and the Sun?

Uranus, the seventh planet from the Sun

The dwarf planet Eris was discovered in 2005, orbiting the Sun at an average distance about twice that of Pluto. In which of the following ways do Pluto and Eris differ from the terrestrial and jovian planets in our solar system?

rocks, metals, hydrogen compounds, hydrogen, and helium, all in gaseous form

none

anywhere between 0.3 AU and the frost line

The jovian planets are thought to have formed as gravity drew hydrogen and helium gas around planetesimals made of __________.

rocks, metals, and ices

All planets have moons.

The inner planets tend to have

fewer moons.

The planets that have rings also tend to have

many moons.

In the leading theory of solar system formation, the planets

formed from the same flattened, swirling gas cloud that formed the Sun.

The solar system is differentiated because

only rocky and metallic particles could form close to the Sun.

The asteroids are mostly

found between Mars and Jupiter.

Planetary orbits

are almost circular, with low eccentricities.

Which of the characteristics below describes the terrestrial planets?

possessing weak magnetic fields

The smallest sort of interplanetary matter is called

interplanetary dust.

The tail of a comet always points

away from the Sun and becomes longest and brightest at perihelion.

The "Grand Tour" of all four jovians was conducted by:

Voyager 2.

As the solar nebula contracts due to gravitation, the cloud

spins faster.