Seismic Waves Show a Sudden Increase at the Mohorovicic Discontinuity

question 15

Multiple Choice

Seismic waves show a sudden increase at the Mohorovicic discontinuity because the

• A)mantle material is so much hotter than the crust.
• B)composition of minerals on both sides of the layer is different.
• C)mantle is so much thicker than the crustal layer.
• D)mineral structure is different in this layer than in crustal rock.

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Definitions:

Altruism

The belief in or practice of disinterested and selfless concern for the well-being of others.

Selfless Action

An act performed with no expectation of reward or recognition, often motivated by a desire to help or benefit others.

Groupthink

A psychological phenomenon that occurs within a group of people, where the desire for harmony or conformity in the group results in an irrational or dysfunctional decision-making outcome.

Dissenting Engineers

Engineers who disagree with the majority opinion within their professional community, often raising ethical, safety, or procedural concerns.