EHST 2110 FINAL EXAM QUESTIONS AND ANSWERS 100% ACCURATE
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EHST 2110
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EHST 2110
EHST 2110 FINAL EXAM QUESTIONS AND ANSWERS 100% ACCURATEEHST 2110 FINAL EXAM QUESTIONS AND ANSWERS 100% ACCURATEEHST 2110 FINAL EXAM QUESTIONS AND ANSWERS 100% ACCURATE
hydrologic cycle - ANSWER - refers to the manner by which water moves from place to place, changing from one form to another
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EHST 2110 FINAL EXAM QUESTIONS
AND ANSWERS 100% ACCURATE
hydrologic cycle - ANSWER - refers to the manner by which water moves from place to place,
changing from one form to another
71% - ANSWER - What percent of the Earth's surface is covered by water?
97.4% - ANSWER - What percent of water is found in seas and oceans?
2% - ANSWER - What percent of water is freshwater locked up in glaciers and polar ice caps?
1% - ANSWER - What percent of water is freshwater found in rivers, lakes and groundwater and
water vapor in atmosphere?
the 1% found in rivers, lakes, etc because its used for human consumption - ANSWER - What
portion of the water is the most significant? and Why?
65% - ANSWER - Water makes up what percentage of the adult body?
83%; 25% - ANSWER - Bones consist of ___ % water and the bones contain ___ % water
water - ANSWER - is essential for the bodys digestion of food, transport of nutrients and
hormones and removal of wastes
50 Liters - ANSWER - to maintain a good standard of living the average individual needs at least
___ of water
water "stress" - ANSWER - those with less than 1700 cubic meters of water per person annually
scarcity - ANSWER - water levels below 1000 cubic meters per person
, irrigation practices, mine drainage, farm chemicals, de-icing highways and urban street runoff -
ANSWER - examples of non point source pollution
rises; falls - ANSWER - the water table usually fluctuates, ___ during wet periods and ___
during the dry periods
recharge area - ANSWER - the area of land that is the main source of the groundwater inflow of
the aquifer and is characterized by permeable soils
acute scarcity - ANSWER - water level conditions falling below 500 cubic meters per person
(insufficient for food preparation and basic sanitation)
explosive growth of human population - ANSWER - major factor accounting for increased water,
especially in urban areas
96% - ANSWER - what percent of all available freshwater supplies occur in the form of
groundwater?
zone of saturation - ANSWER - an area where the spaces between rock particles are
completely filled with water
zone of aeration - ANSWER - where some soil moisture may be found as capillary water
aquifers - ANSWER - a body of permeable rock that can contain or transmit groundwater
porosity - ANSWER - the ratio of the spaces between the rock particles
The Safe Drinking Water Act of 1986 - ANSWER - covers a number of contaminants that public
water systems monitor in both surface and groundwater; these regulations do not cover the
millions of private wells mostly in rural areas
open dumps, landfills, waste ponds, underground storage tanks, tailing piles - ANSWER -
groundwater pollution can result from a number of sources:
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