What Are the Primary Elements in Earth's Continental Crust

question 47

Multiple Choice

What are the primary elements in Earth's continental crust?

• A) oxygen, uranium, and  thorium
• B) oxygen, silicon, and  uranium
• C) oxygen, silicon, and  aluminum
• D) iron, aluminum, and  carbon

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Definitions:

Geothermal Power

Renewable energy derived from the heat of the Earth's interior, used for heating and generating electricity.

Biofuels

Fuels that are derived from biological sources, such as plants and algae, as an alternative to fossil fuels.

Urban Sprawl

The uncontrolled expansion of urban areas into the surrounding countryside, often characterized by low-density residential housing, single-use zoning, and increased reliance on the private automobile.

Urban Renewal

A program of land redevelopment in areas of moderate to high density urban land use, focusing on the rehabilitation or replacement of buildings and infrastructure.