Internal Structure
Crust or Surface
The moon's crust is about 60 km thick on one side while 80 km thick on the other. It is what we see in our night sky.
Lithosphere
The lithosphere is the first of two parts of the mantle. It is not fluid, but rather rigid. It is about 1000 km thick.
Outer Core (or Asthenosphere)
The outer core is the second part of the mantle. It is partially melted towards the outer parts and fluid towards the innermost parts. This layer is semi-solid.
Core
This iron and silicate core is very dense and solid. Its radius is only about 225 miles wide, which, in comparison to Earth, is quite small. It is believed to be fluid.
The moon's crust is about 60 km thick on one side while 80 km thick on the other. It is what we see in our night sky.
Lithosphere
The lithosphere is the first of two parts of the mantle. It is not fluid, but rather rigid. It is about 1000 km thick.
Outer Core (or Asthenosphere)
The outer core is the second part of the mantle. It is partially melted towards the outer parts and fluid towards the innermost parts. This layer is semi-solid.
Core
This iron and silicate core is very dense and solid. Its radius is only about 225 miles wide, which, in comparison to Earth, is quite small. It is believed to be fluid.
This fun lab shows how, after millions of years, the moon's layers settled into their current positions after a major collision left them "strewn about" (see "History and Evolution").
Find it here: <http://www.lpi.usra.edu/education/explore/marvelMoon/activities/familyNight/magmaOcean/>
Find it here: <http://www.lpi.usra.edu/education/explore/marvelMoon/activities/familyNight/magmaOcean/>
On this page you will find information on the layers of the moon. <http://planetfacts.org/layers-of-the-moon/>
Kate Evert