Answer to Question 1Bowen's reaction series explains how felsic magmas and rocks can come from mafic magmas, the
order of mineral formation in a cooling magma, how the mineral composition of magma changes with
magma temperature, how magmas become enriched in Si, Al, and K, and the mineral associations that
are common in igneous rocks
Answer to Question 2Viscosity is resistance to flow. Higher temperature fluids have less viscosity than lower temperature
fluids. In magma, higher silica magmas are more viscous than magmas with less silica. So mafic
magmas are the least viscous, and felsic magmas are the most viscous.