Exam 21: The Moon and Mercury

Many Moon rocks are classified as _______________, which are made up of fragments of earlier rocks cemented together by heat and pressure.

Mercury has a weak magnetic field because of its iron core.

The Moon's core does not contain much iron, so it cannot produce a dynamo effect.

Which of the following is the oldest geological feature of the Moon?

Mercury's period of rotation is exactly _______________ of its orbital period.

The lunar _______________ are saturated with craters.

Which is a unique geological feature found on Mercury's surface?

What are sinuous rilles found on the lunar surface?

Mercury is more than 60 percent denser than the Moon.

The nights are cold on Mercury because it has a negligible atmosphere.

Lobate scarps are very low and small disturbances on the surface of Mercury.

Explain Mercury's peculiar rotation and revolution. How is it different than most other planets?

Which Apollo mission never made it to the lunar surface?

What makes up the dark colors of the lunar lowlands?

Mercury is still geologically active today.

The Moon's gravity is only _______________ that of Earth.

In larger craters, the deformation of the rock can form one or more concentric inner rings with the outer rim, producing _____.

Briefly describe Mercury's geological history through the four steps of planetary development.