study the diagram about the varying pressures of earth’s layers. which is the best estimated pressure…

study the diagram about the varying pressures of earth’s layers. which is the best estimated pressure, represented in units of gpa, of the lower mantle? 110 gpa 220 gpa 305 gpa 360 gpa

study the diagram about the varying pressures of earth’s layers. which is the best estimated pressure, represented in units of gpa, of the lower mantle? 110 gpa 220 gpa 305 gpa 360 gpa

Answer

Explanation:

Step1: Analyze the pressure - depth relationship in Earth's layers

The pressure in Earth's layers generally increases with depth. The pressure at the boundary between the upper and lower mantle is around 125 GPa at a depth of 410 km. The pressure at the outer - core boundary (at a depth of 2900 km) is 330 GPa. The lower mantle is between these two depths.

Step2: Estimate the pressure in the lower mantle

Since the pressure increases gradually from the upper - mantle boundary to the outer - core boundary, and considering the position of the lower mantle in between, a value of 305 GPa is a reasonable estimate for the pressure in the lower mantle.

Answer:

305 GPa