In this bottom section of the rock layers in the Grand Canyon, the oldest rock is shown in these angled layers. Explain what happened in terms of plate tectonics and other conditions to create this section (from the Vishnu Schist, Zoroaster Granite, Igneous intrusion, Bass Limestone, Hakatar Shale and the Shinumo Quartzite)

In this bottom section of the rock layers in the Grand Canyon, the oldest rock is shown in these angled layers. Explain what happened in terms of plate tectonics and other conditions to create this section (from the Vishnu Schist, Zoroaster Granite, Igneous intrusion, Bass Limestone, Hakatar Shale and the Shinumo Quartzite)

Explanation:

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.