In the Modern Theory of Crustal Motion on Earth's Surface

question 34

Multiple Choice

In the modern theory of crustal motion on Earth's surface, the process of seafloor spreading is described as the

• A) motion of plates toward mid-oceanic ridges and away from continental boundaries.
• B) motion of plates away from mid-oceanic ridges and toward continental boundaries.
• C) northward motion of some plates and the southward motion of others, causing earthquakes where they slide past each other.
• D) rotation of plates around axes that remain stationary on Earth causing plate-edge collisions.

---

Definitions:

Proportion Increased

A measure indicating how much the ratio of a part to the whole has grown.

Average Salaries

The mean amount of payment received by employees in a particular job, industry, or region, calculated by dividing the total sum of salaries by the number of employees.

Employees

Individuals who are hired by a company or organization to perform specific duties in exchange for compensation.

Population Standard Deviations

The square root of the variance of a set of values, which quantifies how much the members of a population differ from the population mean.