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Study the diagram about the varying pressures of Earth’s Layers. Earth's layers. The Crust at depth of 0 kilometers, upper mantle depth 410 kilometers, lower mantle depth 2,900 kilometers at 125 gigapascals, 2,200 degrees Celsius. Outer core depth 5,100 kilometers at 330 gigapascals, 5,000 degrees Celsius. Inner core at 364 gigapascals, 5,500 degrees Celsius.

Which layer most likely has a pressure, represented in units of GPa, within the range of 310 GPa to 150 GPa?

outer core
inner core
lithosphere
oceanic crust

1 answer

Based on the pressure values you provided for the Earth's layers, the following pressures are noted:

  • Crust: 0 GPa (at depth 0 km)
  • Upper Mantle: Not specified, but below the crust.
  • Lower Mantle: 125 GPa (at 2,900 km depth)
  • Outer Core: 330 GPa (at 5,100 km depth)
  • Inner Core: 364 GPa (at depth not specified, but it's the innermost layer)

From the information provided, the only layer that falls within the range of 310 GPa to 150 GPa is the Outer Core, which has a pressure of 330 GPa.

Thus, the correct answer is outer core.