Exam 17: Moons and Small Solar System Bodies

At the time of a solar eclipse,the Moon is in ______________ phase.

The seriousness of an asteroid collision is gauged by the ______________ scale.

A(n)______________ moon occurs when more than one-half of the Moon's surface appears illuminated.

The ______________ surrounds the nucleus of a comet.

An observer on the Moon looking at Earth would

Halley's Comet returns about every ______________ years.

Charon is a moon of ______________ .

Which of the following moons has retrograde motion?

As comets approach and move around the Sun,the coma and the tail ______________ in size.

Probably the best-known comet is ______________ Comet.

Which of the following is(are)believed to be material that never collected into a single planet?

The last-quarter Moon rises approximately at

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

The largest impact features on the surface of the Moon are the ______________ basins.

When the Moon is 90° east of the Sun,it will be in the ______________ phase.

Rills on the Moon are believed to have been caused by

Jupiter's moon named ______________ is volcanically active.

A high tide is occurring at Charleston,South Carolina (80°W,33°N).At approximately what other longitude is a high tide occurring?

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?

______________ is the largest known asteroid.