It's not clear exactly how you are distinguishing the crust from the surface; they're more or less the same thing. The thickness of the crust is a few miles (more in some places, less in others), if that's what you were trying to ask.
There are almost no extrusive rocks on the earths surface because they are all under the earths surface. They are mainly lower than the earths surface.
Their evidence comes from rocks at earths surface.
is mount novarupta responsible for any of earths surface changes
Molton rock that flows from a volcano onto Earths surface is
Many minerals occur naturally on the earths surface in rock form
Volcano or shield volcano.
The radius of Earth in kilometers is 6400 km.The earth is big in 6400 km in radius above its surface.
it crushes big rocks to make small rocks.
100
70% or 80% of water covers the earths surface
No the crust covers earths surface
to draw the earths surface.
The tectonic plates below earths surface shape earths landforms
There are almost no extrusive rocks on the earths surface because they are all under the earths surface. They are mainly lower than the earths surface.
it is water cycle
It has to have a big hole in the middle or if it is magma then it can pass threw easily.
mantle