Oceanic Ridges Are Elevated Compared to the Surrounding Ocean Floor

question 25

Multiple Choice

Oceanic ridges are elevated compared to the surrounding ocean floor because _________.

• A) of the shield volcanoes that develop due to seafloor spreading
• B) the mantle is pushing up the lithosphere along the ridge
• C) newly formed lithosphere is hotter and therefore less dense than the surrounding rocks
• D) the older, colder lithosphere is less dense and tends to rise

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Definitions:

Base Year

A reference year used for comparative purposes in the calculation of indexes, such as the Consumer Price Index, to measure changes over time.

Consumer Price Index

A measure that examines the weighted average of prices of a basket of consumer goods and services, such as transportation, food, and medical care, used to measure inflation or deflation.

First Year

The initial period or starting phase of an entity, event, or process, often marking the beginning of measurement or assessment.

CPI

Consumer Price Index, a measure that examines the weighted average of prices of a basket of consumer goods and services, such as transportation, food, and medical care.