Scientists use the _____________ _______________ to measure the strength of earthquakes.

Which of the following does NOT determine whether a rock is an ore?

A) the grade of the ore
B) the type of ore, such as oxide versus sulfide types
C) size and depth of the mineral deposit
D) the location of the deposit
E) all of these factors determine whether a rock is an ore

By the year 2020,the City of Ottawa plans to have some important new features in place to deal with the problem of urban sprawl.Which item does NOT belong in this list? 

A)  a single large fully modernized airport placed well beyond the city limits 
B)  a boundary around the city within which all city development will occur 
C)  well-developed mass transit and rapid transit facilities 
D)  mixed use neighbourhoods with nearby greenbelts

What is a significant source of water pollution in terms of total mass? 

A)  fertilizer 
B)  water-soluble inorganic chemicals 
C)  oxygen-demanding waste 
D)  sediment

What does uranium decay plus an indoor air pollutant produce? 

A)  radioactive radon 
B)  radioactive lead 
C)  radioactive plutonium 
D)  radioactive radium

Unlike streams,groundwater cannot cleanse itself of ______________________________ because it flows so slowly.

Which of the following is probably NOT important in assessing an area's potential for slope failure?

A) comparing the geologic setting to adjacent areas that have or have not failed
B) whether the material is loose sediment or solid bedrock
C) recent changes in slope
D) the orientation of layering and fractures
E) all of these are important

What is the primary ingredient of petroleum? 

A)  nitrogen 
B)  sulphur 
C)  oxygen 
D)  hydrocarbon

Which possible consequence of global warming represents a negative feedback loop? 

A)  Methane may be released from natural wetlands with rising carbon dioxide. 
B)  Methane may be rapidly oxidized by bacteria in tundra soils. 
C)  Methane may be released as permafrost melts in the arctic tundra. 
D)  Methane may be released from oceanic mud as ocean waters warm.

Where is Three Mile Island? 

A)  Connecticut 
B)  Pennsylvania 
C)  New Jersey 
D)  Massachusetts