1. An unconfined aquifer is contained by an impermeable layer of rock or clay on
ID: 159672 • Letter: 1
Question
1. An unconfined aquifer is contained by an impermeable layer of rock or clay on ____ sides?
a) one
b) two
c) three
d) four
2. What is the most precise and efficient irrigation method?
a) canals
b) sprinklers
c) flood
d) drip
3. The EPA puts more strict regulations on bottled water than tap water.
a) True
b) False
4. What extraction process involves setting off explosive charges to create cracks deep in rock and then pumping a mixture of water, sand and chemicals into the cracks?
a) vertical drilling
b) horizontal drilling
c) hydraulic fracturing
d) solar conversion
e) liquid extraction
Explanation / Answer
1. The answer ia (a) One.
An unconfined aquifer has a permeable layer on top and is contained by a layer of bed rock on the bottom.
2. The answer is (b) Drip irrigation.
The drip irrigated crops to be watered more frequently than the traditional sprinkler methods.Drip irrigation becomes more common,recharge of ground water may be less frequent .drip irrigation contribute to food security and increased farm income.
3. The answer is (b) False.
The bottle water industry often makes the claim that is far better regulated than tap water suppliers.
4. The answer is (c) Hydraulic fracturing,
Hydraulic fracturing is a well stimulation technique in which rock is fractured by a pressurized liquid.The process involve high pressure injection of fracking fluid into a welbore to create cracks in the deep rock formations through which natural gas,petroleum will flow more freely.
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