Exam 17: Moons and Small Solar System Bodies

The Moon's average density is

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

The major moons of ______________ were named after literary characters.

Nix and Hydra are moons of ______________ .

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

The Moon is on an observer's meridian about ______________ minutes later each day.

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

Pulverized rock is believed to make up the Moon's

The first-quarter Moon sets at approximately

The Moon completes one orbit around Earth about every

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

The highest tides are called ______________ tides.

The planet ______________ has the largest moon in the solar system.

Which of the Jovian planets has the most moons?

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

At what longitude is an observer who sees the last-quarter moon on his meridian when it is 12:00 noon local solar time at 75°W?

If a person weighs 252 lb on Earth,what will the person weigh on the Moon?

Moonquakes are believed to have caused the Moon's

The full moon by definition occurs

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