Question

Which of the following statements about the D'' layer in the Earth is false?

1) the D'' layer represents the boundary between continental and oceanic lithosphere
2) subducted tectonic plates are thought to terminate in the D'' layer
3) the D'' layer is located at the core-mantle boundary
4) temperature increases sharply with increasing depth in the D'' layer
5) the D'' layer may spawn plumes of heat that rise to the Earth's surface

Answer 1

The false statement is that the D'' layer represents the boundary between continental and oceanic lithosphere; actually, it's located at the core-mantle boundary.

Step-by-step explanation:

The statement about the D'' layer that is false is: 1) the D'' layer represents the boundary between continental and oceanic lithosphere. In reality, the D'' layer is located at the core-mantle boundary, deep below both the continental and oceanic lithosphere. This layer is believed to be where subducted tectonic plates may terminate, and it's known for a sharp increase in temperature with increasing depth. Additionally, the D'' layer may be the source of plumes of heat that ascend to the Earth's surface.