The Andes Mountains contain extensive ____ rocks on both sides of the mountains that formed from the erosion of the rising peaks.
A) igneous
B) sedimentary
C) metamorphic
D) granite

Question

Quizplus · Accepted Answer

Sedimentary rocks form through the accumulation of sediment and are common in areas where erosion is occurring. The Andes Mountains are still actively rising and experiencing erosion, which would lead to the formation of sedimentary rocks. Igneous rocks are formed by the cooling and solidification of magma, which would not be common in this area. Metamorphic rocks are formed when existing rocks are altered by heat and pressure, but there is no indication that this process is occurring on a large scale in the Andes Mountains. Granite is a type of igneous rock and is therefore not the best choice.

The Andes Mountains Contain Extensive ____ Rocks on Both Sides