Exam 5: Geologic Resources

Placer deposits form by differential settling.

Coal forms when buried peat loses most of its __________ and __________.

_______________ releases no sulfur when burned, has a higher net energy yield than other fossil fuels, and can be extracted and used without refining.

An oil reservoir is most similar to:

Low-grade hydrothermal deposits throughout a rock body are called __________ __________ deposits.

A solar cell produces electricity directly from sunlight.

__________ __________ contain an oil-like substance called bitumen.

A/an __________ __________may consist of tens of kilometers of interconnected subterranean passages that follow ore veins or coal seams.

Natural gas is mostly methane.

A nonmetallic resource is:

Solar and wind energy are examples of:

Fossil fuels are:

Tar sands are permeated with __________.

Petroleum migrates from the __________ into the __________.

When water currents slow down, __________ __________can be formed by high-density minerals.

Bauxite is an example of a:

Mineral reserves remain constant over time.

Fossil fuels are renewable.

To form an oil reservoir, cap rocks must be _______________.

Silver is an example of a nonmetallic mineral resource.