Answer the Following Geology of the Moon Flashcards

89 cards   |   Total Attempts: 183
  

Cards In This Set

Front Back
Which of the following facts could result from the Moon's slow rotation and lack of an iron core?
The Moon has essentially no magnetic firled
What is the origin of regolith?
Rock crushed by impacts
Which of the following facts supports the hypothesis that the surface features of the Moon did not change over the past 3 billion years?
The Moon does not have an atmosphere
What is the composition of regolith?
Anorthosite fragments in the highlands and basaltic in the maria
What conclusive proof do we have that the Moon has essentially zero magnetic field?
Magnetic field measurements taken by the Apollo astronauts
Why do astronomers believe that the lunar maria are younger than the highlands?
The maria have fewer cratrers
The Moon's average density is 3 g/cm cubed, while the Earth has 5 g/cm cubed. Which of the following conclusions can be drawn from this comparison?
The Earth has more iron and nickel
What is the probable origin of some mountain chains observed near the lunar maria?
They were formed by material that pushed up by the impact that created the maria.
Astronomers attribute the lack of atmosphere on the Moon to:
The low gravitational force of the Moon
Which of the following changes would you expect to observe if the Moon was orbiting on the ecliptic?
Only a lunar eclipse every full moon and a solar eclipse every new moon are correct
An astronaut on the far side of the Moon would be able to see:
The Earth rising and setting every 29 days
Why do astronomers interpret the lack of impact cratering as evidence of a younger terrain?
Because at the present rate of impacts, a newly formed surface will not suffer many hits
Astronomers claim that the features on the Moon's surface are older than on Earth, because:
The surface of the Earth is subject to water and wind erosion, which do not occur on the Moon
Rays appear to radiate from some of the Lunar craters. What is the origin of these rays?
Streaks of pulverized rock
The absence of plate tectonic motion on the Moon can be explained by the fact that:
The Moon interior is cooler than the Earth's and therefore there is no heat to createconvective motion