Exam 17: Moons and Small Solar System Bodies

Charon is ______________ only moon.

Long-period comets are believed to come from ______________.

______________ is the only moon in the solar system to have retrograde motion.

When the Moon is on an observer's meridian at 9 A.M.,the Moon is in the ______________ phase.

The "horns" of the crescent moon point

______________ is the major moon of Neptune.

The oldest Moon rocks are about ______________ years old.

The diameter of the Moon is approximately

A comet consists of

Sunlight reflected from interplanetary dust results in the appearance of ______________.

A lunar eclipse can occur only when the Moon is in or near the ______________ phase.

The local solar time at 75°W is 12:00 noon.What is the longitude of an observer who sees the full moon on her meridian at this time?

The tail of a comet is longest when the comet is

Tides are caused by

The Moon always presents the same face to Earth because

The Moon's orbital plane is inclined to Earth's orbital plane by

A large volume of the solar system's space is occupied by

The far side of the Moon

When the Moon appears on an observer's meridian at 4 A.M.,the Moon is in the ______________ phase.

A meteor ______________ results when a large number of meteoroids enter Earth's atmosphere.