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5 Pages

Quiz3 2008

Course: BSCI 106, Fall 2008
School: Maryland
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Word Count: 559

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ANSWER: Problem1MultipleChoice Whichofthefollowingconsumeotherlivingorganisms? primaryproducers herbivores carnivores decomposers bothherbivoresandcarnivores Problem2MultipleChoice WhichhabitattypeinthefigurecoversthelargestareaonEarth? ANSWER: wetlands tropicalwetforest algalbedsandreefs openocean Problem3MultipleChoice Whichhabitattypeinthefiguremakesavailablethemostnewtissuetoconsumers? ANSWER:...

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ANSWER: Problem1MultipleChoice Whichofthefollowingconsumeotherlivingorganisms? primaryproducers herbivores carnivores decomposers bothherbivoresandcarnivores Problem2MultipleChoice WhichhabitattypeinthefigurecoversthelargestareaonEarth? ANSWER: wetlands tropicalwetforest algalbedsandreefs openocean Problem3MultipleChoice Whichhabitattypeinthefiguremakesavailablethemostnewtissuetoconsumers? ANSWER: openocean wetlands algalbedsandreefs tropicalwetforest Problem4MultipleChoice Whatisthemainreasonforusingfoodwebsinsteadoffoodchainsinanalyzingecosystems? ANSWER: Mostorganismseatmorethanonetypeoffood. Mostorganismsfeedatseveraltrophiclevels. Thedecompositioncycleneedstobeshown. Mostorganismseatmorethanonetypeoffoodandfeedatseveraltrophic levels. Mostorganismseatmorethanonetypeoffoodandfeedatseveraltrophic levels.Thedecompositioncycleneedstobeshown. Problem5MultipleChoice Afterlookingatthefigure,whatcanbesaidaboutproductivityinthisecosystem? ANSWER: Between80and90%oftheenergyislostatthenexthighesttrophiclevel. Between10and20%oftheenergyislostatthenexthighesttrophiclevel. Nothingcanbesaidbasedonthisinformation. Productivityincreaseswitheachtrophiclevel. Problem6MultipleChoice Whyarechangesintheglobalcarboncycleimportant? ANSWER: Carboncanberecycledonlyalimitednumberoftimes. Globalcarbonavailabilityisdirectlyrelatedtothewatercycle. Carbonisthechiefsourceoffood,andburningitreducesavailablefoodfor primaryconsumers. Carbondioxideisagreenhousegas,andincreasingatmosphericconcentrations couldalterEarth'sclimate. Problem7MultipleChoice Uponlookingatthefigure,whatcanbeconcluded? Residentsofmorepopulatedcountriesusemoreenergyperperson. ANSWER: Residentsincolderclimatesusemoreenergyperperson. Englishspeakingcountriestendtousemoreenergyperperson. Residentsofindustrializedcountriesusemoreenergyperperson. Problem8MultipleChoice Whichofthefollowingcouldbeacauseofeutrophication? ANSWER: removingalimitingresourcefromaterrestrialecosystem removingalimitingresourcefromanaquaticecosystem addingalargeamountofalimitingresourcetoaterrestrialecosystem addingalargeamountofalimitingresourcetoanaquaticecosystem Problem9MultipleChoice Ecosystemsservicesincludeprocessesthatincreasethequalityoftheabioticenvironment.Whichof thefollowingprocesseswouldnotfallunderthiscategory? ANSWER: Keystonepredatorshaveamarkedeffectonspeciesdiversity. Greenplantsproducetheoxygenwebreathe. Thepresenceofdiversewetlandshelpsinfloodcontrol. Thepresenceoflandplantsbuildssoil. Problem10MultipleChoice Alanddeveloperisarguingwithagroupofecologists.Ofcoursethelanddeveloperwantsthemost landpossibleforbuildinghouses,buthastocompromisebysavingsomelandforanimalhabitat.The landdeveloperoffers20hectaresinevenlydistributedbutisolated1hectareportions.Theecologists keeparguingforone20hectareareatoremainintact.Whyaretheecologistsmakingthisproposal? ANSWER: Theisolatedplotsaremorevulnerabletoedgeeffects. Thelargeplotwillcreatemoreinbreedinginmanyspecies. Therereallyisnodifference;theyshouldbothworkequallywell. Theisolatedhectareplotsarebetterbecausetheyspreadoutthehabitat.
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1. 1-1 , , 1. 2. : - - 3. (basic quantities) (derived quantities) ( ) (meter) (kilogram) (second) (ampere) (Kelvin) (mole) (candela) m kg s A K mol cd International Bereau of Weights an
Yonsei University - MATHEMATIC - 공학수
2. (1)2-1 1. 1) 2) , , 2. 1) - () - , ( ): (,) 2) 2-2 1. (, , ) 2. 1) : ( , 1 ) 2) : 2-3,4 , , : 1. 1) : 2) : [ x( t 1 ) & x( t 2 ) ] 2. 1)
Yonsei University - MATHEMATIC - 공학수
3. 3-1 1. : (: , ) : (: , , , ) 2. : a, a. ( )3-2 , 1. 1) s=a+b. 2) a+b=b+a. 3) (a + b) + c = a + (b + c). 2. 1) b ( ) -b b + (-b) 0 2) d = a - b a + (-b). b -b, , 3-3,4,5 , ,
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4. 2 3 4-2 1. r = i + j + k,(): (-3, 2, 5) r = -3i + 2j + 5k2. : r r - r = [ i + j + k] - [ i + j + ]k = [ - ]i + [ - ]j + [ - ]k i + j + k4-3 1. r
Yonsei University - MATHEMATIC - 공학수
5. 15-1 ?1. () . 2. Isaac Newton (1642-1727) 3. : : / 5-2 (1 ): () . : ( ) Question: (non-intertial reference frame) ?5-3 : 5-5 (2 ): . . , () (
Yonsei University - MATHEMATIC - 공학수
6. 26-1 (Friction) , . : . (cold-weld) . . . . () . . . . . . 6-2 1)
Yonsei University - MATHEMATIC - 공학수
7. 7-1 = = + (=) + + 1) 2) 7-2 , . . & ( :) = . 7-1: : : : ?
Yonsei University - MATHEMATIC - 공학수
8. / 8-1 / 1. / 1) () 2) 2. (: 7, - ) 1) (< 0) , + (> 0) , + ( ) 2) (a) - (b) - 3. ( ) . ( ) .
Yonsei University - MATHEMATIC - 공학수
9. 9-1,2 = ? = 0 [ ] 0, ? (e.g. CM) () (center of mass, CM)1. 2. 1) (1) 2) (1): 3) (3):
Yonsei University - MATHEMATIC - 공학수
10. 10-1 ?1. 2. 1) ? 2) ? 3. (, , ) : : : (+) (+) 10-2 1. - 1) : ?2) : (= ) ,2. : ( = ) 10-1 : , , :
Yonsei University - MATHEMATIC - 공학수
11. 11-1 (11 ) :1) - (, ) - () 2) - (*) - : , , *( & ) 3) - : : 11-2 - 1. z: 2. : (radian) (1 = 360o = 2 rad 1 rad = 57.3o = 0.159 )3. 1) 2) :[rad, ]
Yonsei University - MATHEMATIC - 공학수
12. : , , 12.1 . . = + , . = ( ) + . . , .. 12-3 M R , , . : , 1. ? 2. ?
Yonsei University - MATHEMATIC - 공학수
14. 14-1,2 ; (1665, Isaac Newton) , , - ( , ) 1 , . (Shell Theorem): . 14-3 : : 1 (n-1) , .14-4
Yonsei University - MATHEMATIC - 공학수
15. 15-1,2 ? : ( )15-3 : , (=/), (=/) 1. m 1) : V 3 2) : kg/m 3) : ( kg/m3) ( 20 oC 1) ( 20 oC 1) ( 20 oC 1) 1.21 0.99810 1.024103 3 : 5.510 3 9.510 2.810 10 18 1019 3 30.91710 3 7.9
Yonsei University - MATHEMATIC - 공학수
16. . ( ) 0. , .16-1,2 , 1. 1) : 2) (frequency, ) : 1 : 1 hertz 1 Hz =11 = 1 s-1 3) (period, ) : 1 ( T ) ( f ) : 2. 1) x( t) = x m cos ( t + ) 2) x m : : ( ) x m cost = x m cos [( t
Yonsei University - MATHEMATIC - 공학수
17. 117-1 : (, , ) : ( )17-2 1. 1) : , , , 2) : 3) : ( ) 2. 1) : (), , , , X- 2) : ( ) 3) : ( ) 4) : 299,792,458 m/s 3. 1) : , , 2) : 3) : 17-3, 4 , 1. : :
Yonsei University - MATHEMATIC - 공학수
18. 218-1, 2 (), ()1. : p ( ) , 2. (wavefront) (ray) 1) : 2) : ( )3. v= = : () v = ( B : ) B ,. ( 0 oC ) ( 20 oC ) (m/s) 331 343 1,284 ( 0 oC ) ( 20 oC ) (m/s) 1,402 1,482 1,522 (m/s)
Yonsei University - MATHEMATIC - 공학수
19. , , 1 19-1 1. : 2. : 19-2,3 0 , 1. 0 A B T , . 2. 1) : 0 2) : (, , , ) 3) : ( T 3 273.16 K) 3. - 1) 2) T T = Cp T : p : ( : p = p 0 - gh ) C : ( ) T 3 = Cp 3
Yonsei University - MATHEMATIC - 공학수
20 . 20-2 : , (SI) (molemol) 1 (mol) 12 23 C 12 g = 6.0210 23 : N A 6.0210/mol20-3 1. pV = nRTR = 8.31 J/( molK) ( ) n : T : 2. 1) (T = ) W = p dV ViVf( pV = nRT) ( T = )nRT = dV V ViVf= nRT l