Links: GoQuestion 1Complete1.50 points out of2.00FlagquestionMy home ► MEA 101 (003) Fall, 2014 ► Module 7 ► Learning Journal 22  Surface Water, Groundwater and CavesQUIZ NAVIGATIONFinish reviewStarted onMonday, November 24, 2014, 6:42 PMStateFinishedCompleted onMonday, November 24, 2014, 7:02 PMTime taken19 mins 46 secsMarks7.21/8.00Grade 3.61 out of 4.00 (90%)You are considering whether or not to install a groundwater well on your property. In 3-5sentences, describe THREEgeologic features (i.e. not cost) which could influence yourdecision.The location of the well in relation to a major water system (lake, river, ect), the further awayyou travel from a major water system the less water there typically is.How deep the water is, if the water is shallow, it is more likely that there will be contaminationto the groundwater. The more earth between the surface and the water, the more protectionthe water has from contaminates. How much precipitation an area gets is also important, since that is a large source of thewater a well pumps out. If a well doesn't get much rain, it is likely that it will not produce a lotof water in the long run (since eventually, the groundwater will run out).Sample answers:Proximity to a lake would influence in my decision since these help to determine where thewater table is close to the surface. Having my property in a valley would also push me toinstall a groundwater well because, at those locations, groundwater is close to the surface. Iwould want to know something about the quality of the aquifer too: the material it is made of,plus how porous, permeable and thick it is. Comment:You are logged in as Jonathan Kluger (Log out)MEA 101 (003) Fall, 2014 Geology I: Physical12345Question 2Correct1.00 points out of1.00FlagquestionQuestion 3Correct1.00 points out of1.00FlagquestionQuestion 4Partially correct1.71 points out of2.00FlagquestionReview: In your own words, define an unconformity. (Hint: Compare your definition with theone on p. 244 in the 3rd edition, p. 242 in the 2nd edition or p. 246 in the 1st edition.)Answer: An unconformity is a buried erosional surface that represents a gap in the geologic record. Itseparates two rock layers (strata) which may or may not have different compositions.The correct answer is: erosionWhat type of sedimentary rock is strongly associated with springs, aquifers and cavesystems? LimestoneExplain in one sentence why this is the case.Limestone or other carbonate rocks. These rocks react with even mildly acidic water toproduce carbon dioxide. This dissolution reaction (chemical weathering) can leave holes andopenings that form caves or sinkholes.Match the following features with their descriptions.Terrain characterized by sinkholes, caves, limestone pillars, poorlyorganized drainage patterns, and disappearing streamsKarst topographyHanging rock feature of caves formed when calcium-rich water dripsfrom a cave roofStalactitesLimestone region with linear valleys along fault or fracture zonesTravertineMound rock feature of caves formed when calcium-rich water dripsfrom a cave roof to the floorStalagmitesUnconformity is when there is a contact between two rocks in which the top rock is significantly younger than the bottom. It also represents a missing period in geologic time.Limestone is fairly permeable, so water can easily pass through itQuestion 5Complete2.00 points out of2.00FlagquestionYou are logged in as Jonathan Kluger (Log out)Limestone material dissolved into and precipitated from groundwaterTravertineLarge hole on the surface formed from the collapse of a cave roofafter the water table is loweredSinkholeFeature formed when part of the cave roof collapses, letting light intoa caveSkylightThe correct answer is: Terrain characterized by sinkholes, caves, limestone pillars, poorlyorganized drainage patterns, and disappearing streams – Karst topography, Hanging rockfeature of caves formed when calcium-rich water drips from a cave roof – Stalactites,Limestone region with linear valleys along fault or fracture zones – Solution valleys, Moundrock feature of caves formed when calcium-rich water drips from a cave roof to the floor –Stalagmites, Limestone material dissolved into and precipitated from groundwater –Travertine, Large hole on the surface formed from the collapse of a cave roof after the watertable is lowered – Sinkhole, Feature formed when part of the cave roof collapses, letting lightinto a cave – SkylightIn 3 complete sentences or more, respond to the question below. Please include anyconcepts or examples that will provide a context for your reasoning. There are multiple “right”answers. Your response will be graded on the quality of your explanation.How relevant do you think the information in the previous module is to the lives of individualsand communities around the world?This module has proved to be more useful than past modules, due to its discussion of thewater cycle and ground water. Understanding the water cycle is something that everyonetends to learn in school, it is simple, yet important since it teaches important information aboutwater. Information regarding when to dig a well in hopes of groundwater is also useful, sinceyou may never know when you might need to dig a well. Also, being aware of the amount ofwater each person uses, and how that might be reduced is additional useful information. Comment:Finish