What characteristic is associated with felsic rocks?

• A. Low silica content
• B. High silica content
• C. Forms only as sedimentary rocks
• D. Flows like water

Answer: (B)

Felsic rocks are characterized by their high silica content, which typically ranges above 65%. This elevated silica composition gives felsic rocks their lighter color and is often associated with the presence of minerals such as quartz and feldspar. The high silica content contributes to the rocks' overall composition, influencing their physical properties and the type of environments in which they form.

In comparison, mafic rocks, which have a lower silica content, generally contain more iron and magnesium and exhibit darker colors. The formation of felsic rocks is not limited to sedimentary processes; they are predominantly igneous, formed from the cooling and solidification of magma that is enriched in silica. The mention of flowing like water pertains to the behavior of some types of molten rock (magma) but does not specifically define felsic rocks, which may solidify in various forms without exhibiting fluidity.