The moon! Flashcards
When does the moon block the most of the sun during a solar eclipse?
What is the moon & eaths escape velocity
Earth - 11.2 km/s Moon - 2.4 km/s
How much less is the acceleration of gravity on the moon than the earth?
one-sixth earths gravity
What is the distinction between old and new surfaces in the solar system
Old- heavily cratered (has had lots of time to get bonked)
New- Smoother from the lava flow and less time to be cratered
What is a ring of fire eclipse
Why does the same side of the moon always face us
“tidally locked” It’s rotation rate is the same as the time it takes for the earth
How much less is the acceleration of the moon
.16% of earth’s
Why is there no atmosphere on the moon
It’s gravitational force is too weak to maintain it
What is the density of the moon?
3.34 g/cm^3 - same as the denstiy of the crust & outer mantle of the earth
Why is the moons density similar to the earth’s crust
born out of the material surface of the earth (from an impact)
Why did the moon cool quickly
It is small so it cooled quickly (surface area to volume)
What is the first example of understanding the loss of heat dependent to surface area/volume
the moon!
what are the criteria for a world to have a magnetic field
- molten interior
- convection
- moderately rapid rotation
Does the moon have a magnetic field?
No, just remnants from a younger stage
Describe the moons rotation on its axis
Slow, aprox. 30 days. (hence why no magnetic feild
