Summary
Summary Tourism Chapter 9
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Hoofstuk 9: Wêreld-TydsonesKonsepte wat met wêreld tydsones verband hou.................................................................................2
Belangrike faktore oor die aarde.......................................................................................................2
Breedtelyne en lengtelyne.................................................................................................................2
Breedtelyne...................................................................................................................................2
Lengtelyne.....................................................................................................................................2
Die ewenaar.......................................................................................................................................2
Plaaslike tyd.......................................................................................................................................2
Tydsones............................................................................................................................................2
Standaardtyd.....................................................................................................................................3
Greenwichtyd....................................................................................................................................3
Gekoördineerde Univerdele tyd........................................................................................................3
Die internasionale datumlyn (IDL).....................................................................................................3
Halfrondes.........................................................................................................................................3
Seisoene.............................................................................................................................................4
Die 24-uur horlosie............................................................................................................................4
‘n Wêreldtydsonekaart..........................................................................................................................4
Inleiding tot ‘n tydsonekaart..............................................................................................................4
Dagligbesparingstyd (DBT).....................................................................................................................5
In sommige dele van die wêreld (die wat ver weg van die ewenaar is), is die dae in die winter baie
korter as in die somer en in die somer is die dae baie lank...............................................................5
Op hierdie manier is 'n uur van daglig ‘bespaar', vandaar die term ‘dagligbesparing’.......................5
Neem kennis......................................................................................................................................5
Die uitwerking van tydsones en DBT op reis en reisbeplanning............................................................6
Die uitwerking van tydsones op reis en reisbeplanning.....................................................................6
Wanneer ons in 'n ander tydsone in gaan, of baie tyd sones kruis, kan dinge ingewikkeld raak.......6
Die uitwerking van DBT op reis en reisbeplanning.............................................................................6
Vlugvoosheid.........................................................................................................................................6
Vluguitputting........................................................................................................................................7
, Konsepte wat met wêreld tydsones verband hou
Belangrike faktore oor die aarde
Die aarde is ROND.
Dit ROTEER om die son elke 24uur.
Dit beteken dat dit dag in die gedeelte van die aarde is wat na die son toe wys en dit is nag in
die deel direk oorkant dit.
Nou kan ons verstaan dat nie alle dele van die aarde nie dieselfde tyd het nie.
Breedtelyne en lengtelyne
Ons weet dat 'n sirkel 360 grade het, en omdat die aarde rond is, moet dit ook 360 grade hê.
Wetenskaplikes verdeel die aarde se oppervlak in grade en elke graad hou verband met ‘n
breedtelyn of lengtelyn.
Breedtelyne
Die denkbeeldige horisontale lyne rondom die aarde
breedtelyne is horisontaal, links na regs en oos na wes.
Lengtelyne
Hulle is vertikaal en dit is hierdie lyne wat ons
tyd bepaal.
Alle plekke langs dieselfde lengtelyn wys op
dieselfde tyd na die son.
‘n Paar grade aan enige kant van ‘n gegewe
lengtelyn sal ‘n tydverskil van ‘n paar minute
meebring.
Lengtelyne is bo to onder en noord tot suid
Die ewenaar
Die breedtelyn wat om die middel van die
aarde strek is by 0 grade en word die ewenaar
genome.
Die breedtegrade val noord en suid van die ewenaar
Plaaslike tyd
Die presiese tyd vir ‘n plek word die plaaslike tyd of sontyd genome.
Hierdie tyd is gebasseer op waar die son op daardie tyd oor daardie plek is.
Sodra ons oos of wes van ‘n bepaalde plek beweeg , sal ons ons horlosies moet aanpas , wat
plaaslike tyd ‘n bietjie onstabiel maak
Daar is in 1884 besluit om met plaaslike tyd weg te doen
Tydsones
Die aarde beweeg in 24 uur deur 360 grade.
Dit beweeg in een uur deur 15 grade
Die aarde word in 24 tydsones verdeel
Elke sone dek een uur.
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