Question

the composition of rocks affects their densities and the densities of earths layers. use what you have learned and the information in the table to answer the question. in which order would these rocks and minerals be found in the layers of earth from the crust to the lower mantle? eelogite, perovskite, rhyolite, stishovite stishovite, rhyolite, perovskite, eclogite stishovite, perovskite, eclogite, rhyolite rhyolite, eclogite, perovskite, stishovite

Explanation:

Step1: Understand the density - layer relationship

The crust has relatively lower - density materials, and as we go deeper into the Earth (towards the lower mantle), the density of the materials generally increases.

Step2: Compare the densities

We have the densities: \(eclogite = 3.45\space gm/cm^{3}\), \(perovskite=4.03\space gm/cm^{3}\), \(rhyolite = 2.50\space gm/cm^{3}\), \(stishovite=4.29\space gm/cm^{3}\).
We need to order them from the lowest density (crust - like) to the highest density (lower - mantle - like). The order of densities is \(rhyolite(2.50)<eclogite(3.45)<perovskite(4.03)<stishovite(4.29)\)

Answer:

rhyolite, eclogite, perovskite, stishovite