Inquiry4.1-TidalDataLab
Directions:Writedownthetitle,purposeandbackgroundinformation.
Purpose:HowdoesthemoonaffecttheEarth’shighandlowtides?
BackgroundInformation:
Namethecorrectmoonphasefortheamountoftheilluminatedmoon:
_______________________=0%
_______________________=1%–49% _______________________=50%
_______________________=51%-99% _______________________=100%
Procedures:
PartI:DataTable
ExamineDataTable16.1:TidesforVirginiaBeach:April3–30,2001.Workingroupstoanalyzethe
patternsthatexistintherisingandfallingoftides.Thenanswerthefollowingquestions:
1) AtwhattimedidtheearliesthightidesoccuronApril5,2001?
2) AtwhattimedidtheMoonriseonApril9,2001?
3) AtwhattimedidthesecondhightideoccuronApril9,2001?
4) HowmuchoftheMoonwasvisibleonApril8,2001?
5) Giventhepercentagetothequestionabove,whatphasewastheMooninonApril8?
6) HowmuchoftheMoonwasvisibleonApril16,2001?
7) Giventhepercentagetothequestionabove,whatphasewastheMooninonApril16?
8) WheredidthetidesinTable16.1occur?
9) Lookattheheightoftidesforeachday.Howmuchtimeoccursfromonehightidetoanother
hightide?
10)Ahightideoccurswhenthetidereachesitsmaximumheightoneachrise.Howmanyhightides
normallyoccuralongVirginiaBeachin24hours?
11)Alowtideoccurswhenthetidereachesitsminimumheightoneachfall.Howmanylowtides
normallyoccuralongVirginiaBeachin24hours?
12)Whydoyouthinkthispatterninhighandlowtidesexists?
13)Comparethetimesthathighandlowtidesoccureachdayoveratwo-weekperiod.Whatdoyou
observe?Explainwhyyouthinkthishappens.
14)Examinethedatashowingmoonriseandmoonsettimes.Comparethesetimestothetimesof
highandlowtides.Whatpatternsdoyouobserve?Whatexplanationcanyougiveforthese
patterns?
15)Duringwhatphasesdohighesthightidesoccur?
16)Whatexplanationcanyougiveforthesepatterns?
PartII:Graphing–Createyourgraphtoshowtherelationshipbetweentwosetsofdataexaminedin
thisinquiry.Makesuretoplotallthepointsin#2pencilbeforeconnectingwithacoloredpencil.
1.Graphthetideheightsfordays7,8,9,and10.
2.Connectthedatapointsusingastraightedgerulerandacoloredpencilofyourchoice.
3.Thengraphthetideheightsfordays13,14,15and16.
4.Connectthedatapointsinadifferentcolorforthesecondlinegraph.
PartIII:Reading
Read“CanWaterFallUp”frommywebsiteandanswertheDiscussingtheReadingquestions.
PartIV:DiscussingtheReading
A. WhydoestheMoonexerttwicetheamountoftidaleffectonEarththanthelargerSun(Even
thoughtheSunislarger,whydoesoursmallMoonhavethebiggestinfluenceonEarth’stides)?
B. DuringwhichtwoMoonphasesdospringtides(higherthananormaltide)occur?
C. DrawapictureoftheSun,EarthandMoonduringaSpringTide.
D. DuringwhichtwoMoonphasesdoNeapTides(lowerthananormalhightide)occur?
E. DrawapictureoftheSun,EarthandMoonduringaNeapTide.
F. Whataretwoeffectsofmoon’sgravitationalpullontheEarth?
G. WhatisasignthattidalforcesareatworkontheMoon?
H. Explainwhythearticlewascalled“CanWaterFallUp?”
I. Whatcreatesahightidetwiceashighasa“normal”hightide–aSpringTideoraNeapTide?
Explainwhythishappens.(Youcanre-watchthevideocalled“ActionofTides”onmywebsite)
PartV:AnalyzingtheData-Useyourgraphand/ordatatabletoanswerthefollowingquestions:
1) Accordingtothedata,SpringTidesoccurduringwhichmoonphase?
2) Accordingtothedata,NeapTidesoccurduringwhichmoonphase?
3) Accordingtothedata,approximatelyhowmuchtime(inhours)occursbetweenhightides(High
TidetoHighTide)?
4) Howmuchtimeoccursbetweenahightideandalowtide?
5) Explainwhatpatternsyouseeintides?
6) WhichtideoccurswhentheMoonisclosesttotheEarth-ahightideoralowtide?
7) Whatisthemainfactorforcausinghighandlowtides?