Continental Crust Was Only Able to Form Once Earth's Temperature

question 39

Multiple Choice

Continental crust was only able to form once Earth's temperature had cooled enough for partial melting of the mantle to occur and produce basalt that was buoyant enough to stay afloat.Before this point small rafts of thin crust formed and remelted in a continuous cycle.What was the composition of these rafts?

• A)mafic
• B)ultramafic
• C)felsic
• D)intermediate

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Definitions:

Computers

Electronic devices designed to process, store, and output information, serving a wide range of personal, educational, and business applications.

Oil

A fossil fuel found in the Earth's crust, primarily used for energy production and as a raw material in the chemical industry; crucial to the global economy.

Comparative Advantage

The ability of an individual, company, or country to produce a good or service at a lower opportunity cost than its competitors.

Transaction

An exchange or transfer of goods, services, or funds between two or more parties.