ENVS2 1000 Complete Questions And Answers With Verified Solutions
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ENVS2 1000 Complete Questions And Answers With Verified Solutions
How would you best characterize the state of the global groundwater resource? ANS Groundwater resources are generally declining worldwide.
If you had to pick a reasonable use for groundwater that took advantage of the best attri...
envs2 1000 complete questions and answers with ver
envs2 1000 complete questions and answers
how would you best characterize the state of the g
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ENVS2 1000 Complete Questions And Answers With
Verified Solutions
How would you best characterize the state of the global groundwater resource? ANS Groundwater resources
are generally declining worldwide.
If you had to pick a reasonable use for groundwater that took advantage of the best attributes of this resource,
what would it be? ANS Drinking water supplies
Over the past decade, the population of the US has continued to grow while water use has remained constant.
How is this happening? ANS There has been increased efficiency in agricultural water use.
If you cut down a big section of forest in the middle of the Amazon, what would happen
to the flow of water from land to the atmosphere in the region? ANS It would decrease because
evapotranspiration would decrease.
Why is it important to make a distinction between consumptive and non-consumptive use? ANS Non-
consumptive uses of water are sustainable over long periods of time assuming that the water is not degraded,
whereas consumptive uses of water do not return the water to its source and therefore don't help replenish the
original water supply.
Which of the following is a consumptive use of water? ANS Watering sugar beet fields in Boulder County.
Many regions in Africa suffer from economic water scarcity, where as the western US is threatened by physical
water scarcity. With unlimited financial resources, which water scarcity issue, that in Africa or in the western US, is
most easily addressed? ANS Water scarcity could be more easily addressed in central Africa because creating
infrastructure to capture and distribute water will reduce the problems of water scarcity there.
There are about 3200 cubic miles of water in the atmosphere. Each day about 310 cubic miles of water enter the
atmosphere through evaporation and transpiration and fall in precipitation. About how long does an average water
molecule spend in the atmosphere? ANS About 10 days
Like most groundwater resources, the Ogallala Aquifer (also know as the High Plains Aquifer) in the mid-west US in
a nonrenewable water resource. This aquifer provides drinking water for two million people and irrigation water for
20% of wheat and cotton grown in the US. Currently the volume of water in the Ogallala aquifer is equal to
approximately 3,000,000,000 acre-feet of water and 20,000,000 acre-feet of water are removed every year.
Considering this, at what rate would water have to be added to the aquifer in order to consider it a renewable
, water resource rather than a non-renewable water resource? ANS Approximately 20,000,000 acre-feet per
year.
Why are there dams in Colorado? ANS Mostly to trap Spring runoff from the mountains for use later in the
summer.
Because of Pollutainia's many problems with ozone, half the town is in the hospital with respiratory distress. What
primary pollutant(s) will you need to regulate to address this problem? ANS Hydrocarbons and NOx (nitrogen
oxides)
There used to be beautiful grasslands around Pollutania but those grasses are now all gone because of persistent
acid raid and the only thing left is a rock tower with a grumpy old guy who wears funny looking socks. To address
the acid rain issues, what primary pollutant(s) will you need to examine/measure/perhaps regulate in the city?
ANS SOx and NOx
One of the members of the hiring committee for the air quality job in Pollutainia has a major problem with coal
fired power plants and makes a not so subtle suggestion that you shut down coal plants in order to deal with ozone
issues. You have the benefit of having taken ENVS 1000 and so are able to respond that it would be best to focus on
which of the following pollutants? ANS Cars and trucks.
One of the other members of the hiring committee really is bothered by acid rain and wants to know how you
would tackle that problem. In response you suggest which of
the following local ways of addressing this particular pollution problem. ANS Put more pollution regulation
technology on the coal plant just outside town.
Finally, assume that I am on the hiring committee and I give you a really hard time about what pollutants you could
address locally and which you couldn't. Since you are well-versed in the issues of pollutant residence times, I tell
you that the chemicals that cause acid rain have a residence time of 2-3 weeks whereas the chemicals that cause
ozone have residence times of hours to a day. As a reference for your answer, you can also consider that the winds
over this area blow an average of 10 miles per hour. Given this information, which pollution problem could most
effectively be addressed at the local, rather than regional level? ANS Ozone
You are responsible for maintaining good air quality in one of China's large cities. You are particularly concerned
about emissions of sulfur and heavy metals. Which of the following are you going to want to reduce? ANS
Energy generation from coal fired power plants
What are the likely reasons why the Montreal Protocol Agreement was successful? ANS Because there was
clear science, broad international consensus, and available technological replacements for CFCs.
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