Question

the table shows the thickness, top density, and bottom density of the different layers of the earth. which statement is supported by the information in the table? as depth increases, the density of the layers increases. as depth increases, the density of the layers decreases. as depth increases, the thickness of the layers increases. as depth increases, the thickness of the layers decreases.

thickness (km)

density (g/cm³)

types of rock found

top

bottom

crust

30

2.2

2.9

silicic rocks

upper mantle

720

3.4

4.4

peridotite

lower mantle

2,171

4.4

5.6

magnesium and silicon oxides

outer core

2,259

9.9

12.2

iron+oxygen

Explanation:

Step1: Analyze density change with depth

Check top - density values for each layer: 2.2 (crust), 3.4 (upper mantle), 4.4 (lower mantle), 9.9 (outer core). Also check bottom - density values: 2.9 (crust), 4.4 (upper mantle), 5.6 (lower mantle), 12.2 (outer core). As we go from crust (shallowest) to outer core (deepest), density values increase for both top and bottom density measurements.

Step2: Analyze thickness change with depth

The thickness values are 30 (crust), 720 (upper mantle), 2171 (lower mantle), 2259 (outer core). The relationship between thickness and depth is not a simple increasing or decreasing one. For example, the jump from crust to upper - mantle thickness is large, but the increase from lower - mantle to outer - core thickness is relatively small.

Answer:

As depth increases, the density of the layers increases.