EVERYDAY SCIENCE

Detailed explanation-1: -Sedimentary rocks form the middle and top layers of Grand Canyon. Layers of sediment hardened into sedimentary rocks over time. Most of the canyon’s igneous and metamorphic rocks make up the bottom layers of Grand Canyon, near the Colorado River. Igneous rocks formed when liquid magma cooled.

Detailed explanation-2: -canyon, deep, steep-walled, V-shaped valley cut by a river through resistant rock. Such valleys often occur in the upper courses of rivers, where the stream has a strong, swift current that digs its valley relatively rapidly. Smaller valleys of similar appearance are called gorges.

Detailed explanation-3: -Previously, it had been called the “Big Canyon.” And the Paiute Indians dubbed the canyon “The Mountain Lying Down.” Flight safety catalyst: A 1956 mid-air collision over the Grand Canyon between two commercial flights spurred the creation of the Federal Aviation Administration.

Detailed explanation-4: -Grand Canyon is considered one of the finest examples of arid-land erosion in the world. Incised by the Colorado River, the canyon is immense, averaging 4, 000 feet deep for its entire 277 miles.