Question

Study the table about Earth’s interior.

A 4 column table with 5 rows. First column is unlabeled with entries: Crust, uppercase mantle, Lower mantle, Outer core, Inner core. Second column is labeled Thickness in kilometers with entries: 30, 720, 2,171, 2,259, 1,221. Third column is labeled Density in grams per centimeters cubed, divided into Top and Bottom columns. Top entries are: 2.2, 3.4, 4.4, 9.9, 12.8. Bottom entries are: 2.9, 4.4, 5.6, 12.2, 13.1. Fourth column is labeled Types of Rock Found with entries: Silicic rocks, Peridotite, Magnesium and silicon oxides, Iron plus oxygen, Iron plus oxygen.

If silicic rock is found in a core sample, what evidence does this provide about the rock’s location?

Its location is likely underneath an ocean or a mountain.
Its location is likely denser than Earth’s lithosphere.
Its location likely has a consistency that changes from solid to liquid.
Its location likely contributes to the creation of Earth’s magnetic field.

Answer 1

Its location is likely underneath an ocean or a mountain.

Reason: the table shows silicic rocks are characteristic of the crust. The crust is the outer layer that lies beneath oceans (oceanic crust) and beneath continents and mountains (continental crust).