Exam 5: Geologic Resources

Oil or natural gas originate from the:

Electricity can be used to dissociate water into oxygen and hydrogen that could then be used to power a fuel cell to drive an electric motor.

Often, early-formed minerals sink to the bottom of a magma chamber in a process called __________ __________.

Plant matter is composed mainly of carbon, hydrogen, and silicon.

Placer ore deposits form:

_______________ is formed as a residual deposit in warm climates.

Most of the world's iron is mined from:

Energy sources, such as sunlight and wind, are _______________.

Salts (such as halite) that are left behind when water evaporates are called:

________________ processes form mineral deposits as liquid magma solidifies to form an igneous rock.

A/an __________ __________ deposit forms when dissolved metals precipitate in a fracture in rock.

In a placer deposit, gold settles out first when the stream current slows down because:

On the average, more than half of the oil in a reservoir is left behind after a well has "gone dry," using primary recovery techniques.

__________ is any rock sufficiently enriched in one or more minerals to be mined profitably.

Mineral reserves:

Mining of sand and gravel has made more money than mining of gold.

The color of _______________ is caused by precipitation of fine-grained metal sulfide minerals.

Crystal settling from magma occurs:

A black smoker is an example of a:

Bauxite is an example of a residual ore deposit.