How thick is a single pane glass window typically? I recently broke the window in my dorm. I was resting my foot on the window, and it just broke underneath. I measured the thickness of the broken window, and found it only to be an eighth inch. I feel almost like I should be the one complaining... Source(s): average window thickness: https://bestanswer.im/e14/average-window-thickness.
By Andrew Alden. Metamorphic rocks are the third great class of rocks. These are what happens when sedimentary and igneous rocks become changed, or metamorphosed (changed in form), by conditions underground. The four main agents that metamorphose rocks are heat, pressure, fluids and strain.
How does Metamorphic rock form? Update: Deep underground, there is a lot of heat and pressure, This heat and pressure can change igneous and sedimentary rock into another type of rock called Metamorphic rock. Metamorphic rock often has layers that fold over one another. Marble and slate are metamorphic rock. These rocks are used in many buildings.