Exam 22: Resources

An oil field is a region underlain by one oil pool.

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

_______ is an unusual mixture of ice and methane.

Most geologic resources are ____, they form very slowly and are extracted much faster than nature replaces them.

Most hydrothermal ores are metallic __________.

Some geologic resources are ____, that is, they are replenished by natural processes fast enough that people can use them continuously.

____ resources enable us to create the metals used in our world today.

The major iron ore minerals are _____.

Ores are naturally occurring materials that can be mined profitably.

Over 60% of the world's oil comes from exploitation of oil fields in the Middle East.

New oil is born where _____.

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

The ore-forming process of ______ occurs as early-forming minerals settle to the bottom of a cooling magma.

Uranium is found in ________.

The _____ resources include building stones and road gravels.

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

Evaporite deposits are important sources of ___.

______ is the initial stage in the development of coal.

Most of the easily recoverable uranium in the United States is found in sandstone in New Mexico, Utah, and Colorado.

The United States has enormous quantities of oil in __.