How it’s made- They are formed by the cooling of molten magma on the earth's surface.
What factors affect rock melting point- The factors that mainly affect in the formation of magma can be summarized into three: Temperature, pressureand composition.
Chemical composition- Igneous rocks are commonly classified by their composition and texture. Most are composed of the eight most abundant elements in the Earth's crust.
Mafic/Felsic rock- felsic refers to igneous rocks that are relatively rich in elements that form feldspar and quartz. It is contrasted with mafic rocks which are relatively richer in magnesium and iron.
Where is it found mafic/felsic- Mafic rock is usually found on oceanic plates at divergent plate boundaries. Felsic rocks can be found along continental margins.
What are mafic/felsic igneous rocks made of- Felsic rocks are rich in elements that form feldspar and quart. Mafic rocks are relatively richer in magnesium and iron.
How do igneous rocks affect society- They are formed by volcanos magma which really doen't affect the enviornment besides the magma when it is molting hot and kills everything in its path