possibly molten crust is thicker than earth's (thicker on far side) mantle is more rigid than earth's plate tectonics requires thin crust and ductile mantle, so moon is inactive SURFACE FEATURES OF THE MOON highlands : oldest parts of the moon maria : seas of lava left from partial melting of the moon in its early days (melted by bombardment) craters : caused by impact of meteorites (maria are less cratered) ATMOSPHERE OF THE MOON --none;
(possibly molten crust; is; thicker than earth's (thicker on far side) (mantle; is; more rigid than earth's plate tectonics) (maria; are; less cratered) ATMOSPHERE OF THE MOON) (moon; is; inactive SURFACE FEATURES OF THE MOON highlands) (seas of lava; left; )
possibly molten crust mantle maria moon seas of lava
is is are is left
thicker than earth's (thicker on far side
more rigid than earth's plate tectonics
less cratered) ATMOSPHERE OF THE MOON
inactive SURFACE FEATURES OF THE MOON highlands