The Earths crust is approximately 650 km deep.
its about 4-7 miles thick
The earths crust is 7km thick
The earths crust is a part of the outermost layer.
Silicon is a mixture of the minerals of the earths crust. so.... silicon isn't something from the earths crust. -thanks for your question.
thinner and denser
This is because the size of the earth is relative stable or constant. Geologic activities do not actually changes earth size as a whole, but rather reshapes and resizes its landforms and continents. All that happen is just a recycling process whenever the earths crust seperates at divergence a boundary its being consumed somewhere else at a convergence boundary. And so on and on it goes, by this the earths overall size is maintained.
The amount of crust present on Earth always stays the same. The amount of crust descending into the mantle is balanced by the amount of crust formed at mid-ocean ridges.
how wide is the earths crust
The abundance of neodymium in the earths crust is approx. 40 ppm.
Yes all metals are in the earths crust in ore form.
The sudden vibration in the plates inside the crust causes the earths crust to rise & fall.
The earth's crust is not stress
mantle
Yes, Compression can thicken the earths crust and tension can cause thinning in the earths crust.