The alternation of the chemical makeup of a material is known as a _____ change.
a. Chemical
b. Molecular
c. Elemental
d. Reactive
Answer: a. Chemical
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________ controls the ease (or difficulty) of groundwater transmission through a porous material.
a.) Permeosity b.) Potability c.) Portability d.) Permeability
How might hydrothermal ore genesis occur?
A) Hot seawater rushes through porous rocks and crystallizes on contact with the rocks. B) Cold seawater meets hot circulating hydrothermal fluids and precipitation occurs. C) Two rock masses meet at a hydrothermal vent and the heat of the water dissolves ions from both masses. They recrystallize when they are carried to cooler water. D) Hot water from a hydrothermal vent dissolves ions from one rock mass and reprecipitates them as ore in cooler water.
Which of the following countries has the highest debt as a percentage of GNI?
A) United States B) Canada C) Russia D) China E) Australia
Which of the following describes the coastline of the Atlantic Periphery?
A) Gently sloping, with wide flat sandy beaches B) Glaciation as left thin soils and rocky, rugged coastline C) Many harbors where cities and towns have been established D) Both A and C E) Both B and C