10 Questions
What is the main reason why gold extraction from ocean water is impractical?
The cost of extracting gold from seawater is high.
In terms of gold content, where is the largest known reserve found?
In iron-manganese nodules on the ocean floor
Why is mining iron-manganese nodules from the deep ocean floor challenging?
Sediment stirred up during mining can harm the ocean environment.
What is a major obstacle to extracting minerals from the open oceans?
The harmful impact of mining activities on the ocean environment
Which ocean contains many areas covered with iron-manganese nodules?
Pacific Ocean
What is the term used to describe areas in the United States with a complex pattern of rock types?
Orogenic belts
What is the primary reason why most rocks do not contain economically valuable minerals?
They lack the necessary minerals
Why do large areas with only one or a few colors on the geologic map of the United States represent sedimentary rocks?
A blanket of sedimentary rocks covers deeper rocks in Earth's crust
What geological term refers to the word 'mountain-building'?
Orogenic
Why do metal mining operations take up much less than 0.1 percent of the total land area in the United States?
Ores are formed only in specific conditions
Explore the concept of mineral resources in the ocean and the challenges associated with extracting them. Learn about the low concentrations of chemical elements in ocean water and the impracticality of using them as mineral resources.
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