Exam 17: The Atmosphere

The asteroid belt is between the orbits of

The orbital period of the Moon with respect to a star (other than the Sun) is called a(n) ______________ month.

The Moon completes one orbit around Earth about every

Which of the Jovian planets has the most moons?

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

The Moon always presents the same face to Earth because

______________ is the largest moon in the solar system.

The "horns" of the crescent moon point

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

The impact of meteorites on the Moon has caused

If a person weighs 150 lb on Earth, what will the person weigh on the Moon?

Short-period comets, such as Halley's Comet, are believed to come from the ______________.

The oldest rocks on the Moon were formed about how many years ago?

The particles of interplanetary dust are called ______________.

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

Probably the best-known comet is ______________ Comet.

______________ tides occur during the first-quarter and last-quarter moon phases.

Which of the following is usually burned up in Earth's atmosphere?

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

If a person weighs 150 lb on Earth, what will the person weigh on the Moon?