Exam 21: Geologic Resources

The ratio of the amount of energy extracted versus the amount of energy put into the extraction process of a resource can be initialized as ____.

_______ is an unusual mixture of ice and methane.

Evaporite deposits are important sources of ___.

This type of geologic resource provides the power that drives the modern world.

In 1900 more than _____ percent of America's energy needs were satisfied by burning coal.

The recoverable reserve for coal in the United States is _______.

In terms of plate tectonics,future oil reservoirs form most easily in areas ____.

Hydrocarbons must be heated to break down into simpler molecules useful to humans.

Although technically not coal,the first material to form in the coal cycle is ___.

Bituminous coal is the highest "grade" or "rank" of coal.

Anticlines and domes create common oil traps.

Uranium is found in ________.

Most copper ores are ___.

Geological resources sustain life,and the most fundamental of these resources are _____.

Hydrothermal fluids are the most important source of metallic ore deposits.

The origin of petroleum is very similar to that of coal.

There are two basic forms of energy categories,____ energy is stored energy.

A pound of ordinary bituminous coal typically contains ______ percent carbon.

A barrel of oil contains ______ U.S.gallons.

Because natural gas is less denser than oil it accumulates on the top of the oil.