The Need for Fully Automatic (Unattended) Venting in Locations Not

question 15

Multiple Choice

The need for fully automatic (unattended) venting in locations not easily accessed requires a different type of device.A(n) ____ air vent often provides the solution.

• A) electronic
• B) top-loaded
• C) ergonomic
• D) float-type

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Definitions:

Platinum

A dense, malleable, ductile, and highly unreactive precious metal used in jewelry, automotive catalytic converters, and various industrial applications.

Mafic to Ultramafic Intrusions

The intrusion of magma rocks ranging from mafic (rich in magnesium and iron) to ultramafic (extremely rich in magnesium and iron) compositions, important in the formation of various ore deposits.

Veins

Mineral deposits that fill cracks in rocks, often distinguished by their different materials from the surrounding rock.

Hydroelectric Dams

Dams built to generate electricity by using the energy of water flowing through turbines.