Exam 21: The Moon and Mercury

What is the dominant feature of the lunar surface?

Mercury is _______________ to the Sun, thus affecting its rotation.

Which mission has recently provided scientists with information about Mercury's magnetic field?

During which stage of planetary development did the lunar maria form?

Where did the Apollo 11 lunar module land and sample?

There is no air on the Moon to scatter light and soften shadows

Between July 1969 and December 1972, 17 people reached the surface of the Moon.

Large, smooth, dark plains on the moon are called ____.

Because the Moon has a low average density and no magnetic field, then its dense core must be _______________.

What solid evidence do we have of the Moon's age?

Where did the Apollo 15 lunar module land and sample?

The relationship between the rotation of Mercury and its revolution is referred as a(n) _______________.

Mare Imbrium is the result of a planetesimal of 275 km across striking the lunar surface 4 billion years ago.

It is believed that a giant impact may have taken away some of Mercury's low-density crustal rock and left a small, dense world with a(n) large, dense, and _______________ core.

What are the shared common characteristics of the Moon and Mercury?

Debris blasted from the impact of a crater is called ____.

There are no _______________ rocks on the surface of the Moon.

Mercury's _______________ are marked by meteorite craters less than 15 km in diameter, in addition to secondary craters.

What space mission is currently exploring Mercury? What information has this mission so far provided about the planet?