Quiz 10

Which of these best describes the chemical composition of the moon?

It appears to be a combination of Earth crust, Earth mantle, and asteroids

How does the large-impact hypothesis explain why the moon lacks water, hydrates, and volatiles?

The water, hydrates, and volatiles vaporized in the heat of the collison

The moon's highlands

are older than the maria

The earth's original atmosphere was composed mostly of

carbon dioxide, water vapor, and nitrogen

consider cratering, scientists have discovered young surfaces have _____ craters, which are ______ spaced

few, widley

The Earth's moon has no atmosphere because its mass is ________ the Earth's and its escape velocity is ______ that of the Earth

less than, more than

The mountains on the moon were created by

meteoritic/asteroid impacts

The earth's carbon dioxide amounts can normally be reduced by

plate tectonics and the dissolving of CO2 into the oceans

The moon's surface is covered with a fine powdered layer of rock called

regolith

Craters and impact basins on the moon are named in honor of

scientists and philosophers

Which hypothesis, concerning the formation of the moon, makes predictions that best fit the observed lunar data?

the large impact hypothesis

The presence of breccias among the lunar rock samples shows that

the lunar surface was heavily bombarded by meteorite impacts

How were the smooth, dark plains called maria formed on the moon's surface?

the maria formed as the floors of impact craters flooded with lava

The Moon's atmosphere is mostly composed of:

the moon has no atmosphere

The nearside of the moon has more mare because

the nearside has a thinner crust than the farside