Siyazi ukuba uMhlaba uneentshukumo ezininzi ezithi zijikeleze kwaye ziguqulwe. Ngale nto sithetha ukuba ngenxa yezi ntshukumo, zikhona solstices kunye neequinoxes. I-equinox lixesha lonyaka apho ilanga libekwe kanye ngaphezulu kweikhweyitha, ke ngoko libekwe ngaphezulu kwe-zenith. Oku kuthetha ukuba imini nobusuku bunexesha elifanayo. Ukuchasana kwenzeka nge-solstice.
Kule nqaku siza kukuxelela zonke iimpawu kunye nolwahluko phakathi kwee-solstices kunye neequinoxes.
Zithini ii-solstices kunye nee-equinox
Iiquinoxes
Okokuqala kukukwazi ukuba zeziphi ii-solstices kunye neequinox. I-equinox kuxa ilanga libekwe kwi-ikhweyitha kwaye imini ihlala ngokufanayo nobusuku. Oko kukuthi, bahlala malunga neeyure ezili-12. Oku kwenzeka kabini ngonyaka, malunga noMatshi 20 no-Septemba 22. Oku kungqamana nokuqala kwentwasahlobo kunye nokuwa kweminye imimandla.
Ukuba sisahlulahlula iplanethi ibe ziziqingatha ezibini, enye ikhanyiswe kukukhanya kwelanga kwaye enye ifihliwe. Kwenye sinemini kwaye komnye ubusuku. Umgca wokwahlula udlula ngqo kwiipali. Oku kwenzeka kuba ngexesha leequinox zombini iipali azitsibilikisanga okanye kude nelanga. Ayisoloko isenzeka ngemini enye. Banomda weentsuku ezininzi. Kungenxa yokuba ubude beminyaka abuhlali bufana. Khumbula ukuba yonke iminyaka emi-4 ukuba wongeza olunye usuku kwikhalenda kuba ngunyaka wokutsiba. Ngexesha leequinox, ilanga libekwe kwelinye lala manqaku mabini kwinqanaba apho i-ikhweyitha yasezulwini kunye ne-ecliptic ziwela khona. Oku kungqinelana nesangqa esikwindiza enye ne-ikhweyitha. Oko kukuthi, inkangeleko yesibhakabhaka kukuqikelelwa kweikhweyitha yomhlaba.
I-equinox ye-vernal yenzeka xa esiya emantla kuphela kwinqwelomoya ye-ecliptic kwaye iwele yonke i-ikhweyitha yasezulwini. Apha siyabona ukuba ixesha lasentwasahlobo liqala kumantla omhlaba. Kwelinye icala, iquinox yasekwindla yenzeka xa ilanga lihamba linqumla i-equator yasezulwini ukuya emazantsi. Kuphawula ukuqala kokuwa.
IiSolstices
IiSolstices ziziganeko apho ilanga lifikelela kwelona zinga liphakamileyo okanye elisezantsi kunyaka wonke esibhakabhakeni. Kunyaka kwiNtlabathi yeNtlabathi kukho ii-solstices ezimbini. Kwelinye icala sine solstice yehlobo kwaye kwelinye icala ixesha lasebusika. Eyokuqala yenzeka ngoJuni 20-21 kunye ne-solstice yasebusika ngoDisemba 22-22. Kuzo zombini ii-solstices, ilanga libekwe komnye wemigca emibini ecingelwayo eMhlabeni eyaziwa ngokuba yi-Tropic yeCancer kunye neTropic yaseCapricorn. Xa ilanga litshonile ngaphezulu kweTropic yeCancer kuxa kusenzeka i-solstice yehlobo kwaye xa ikwiTropic yaseCapricorn, kuqala ubusika.
Ngexesha le-solstice yokuqala kulapho sifumana olona suku lude enyakeni, ngelixa lolwesibini lolona suku lufutshane kunye nobona busuku bude.
IiSolstices kunye neequinox zasehlotyeni nasebusika
Ihlobo laseSolstice
Kuhlala kucingwa ukuba loo mini, eyokuqala yehlobo, yeyona ishushu. Kodwa akunyanzelekanga ukuba. Iatmosfera yomhlaba, umhlaba esime kuwo kunye neelwandlekazi zifunxa inxenye yamandla avela kwinkwenkwezi yelanga kwaye ziyigcine. La mandla akhutshwa kwakhona ngohlobo lobushushu; Nangona kunjalo, gcinani engqondweni ukuba Nangona umhlaba ukhupha ubushushu ngokukhawuleza, amanzi athatha ixesha elide.
Ngexesha losuku olukhulu, oluyi-solstice yasehlotyeni, yenye yezi hemispheres zimbini ifumana awona mandla maninzi avela kwiLanga lonyaka, kuba ikufutshane nenkwenkwezi yokumkani kwaye, ke ngoko, imitha yenkwenkwezi ekhankanyiweyo ifika ngokuthe ngqo. Kodwa amaqondo obushushu elwandle kunye nomhlaba asathathi kancinci okanye kancinci, okwangoku.
IiSolstices neequinoxes: ubusika besuku
Iplanethi yoMhlaba ifikelela kwinqanaba kwindlela yayo apho imitha yelanga ibetha umphezulu ngendlela efanayo ngaphezulu kwe-oblique. Oku kwenzeka kuba uMhlaba uthambekele ngakumbi kwaye imitha yelanga ayinakufika ngokungafaniyo. Oku kubangela iiyure ezimbalwa zokukhanya kwelanga, olwenza ukuba lube lolona suku lufutshane enyakeni.
Kukho umbono ombi eluntwini ngokubanzi malunga nobusika nehlobo ngokomgama osuka eMhlabeni uye eLangeni. Kuyaqondakala ukuba ehlotyeni kushushu kuba uMhlaba ukufutshane neLanga kwaye ebusika kubanda kuba thina fumana kude. Kodwa yahluke ngokupheleleyo. Ngaphezulu kwesikhundla soMhlaba ngokubhekisele kwilanga, yintoni echaphazela amaqondo obushushu eplanethi kukuthambekela kwimitha yelanga etshaya umphezulu. Ebusika, kwi-solstice, Umhlaba usondele kakhulu kwiLanga, kodwa ukuthambeka kwawo kuphezulu kwiNtlabathi yeNtlabathi. Ngesi sizathu, xa imitha ifika kumphezulu womhlaba ithambekele kakhulu, imini imfutshane kwaye ibuthathaka, ngenxa yoko ayifudumezi umoya kangako kwaye iyabanda.
Intwasahlobo kunye neAquinoxes
Apha kufuneka sahlule iiquinox ngokwe-hemisphere apho sikhona. Kwelinye icala, i-hemisphere esemantla, xa iyi-equinox ye-vernal sinayo epalini Ngasentla usuku luya kuhlala iinyanga ezintandathu, ngelixa eSouth Pole, ubusuku buya kuhlala iinyanga ezi-6. Kuya kufuneka ndikhumbule ukuba ukwindla kuqala kumazantsi e-hemisphere.
Njengoko ubona, ii-solstices kunye nee-equinox ikakhulu zibangelwa kukuhamba komhlaba ngokubhekisele elangeni kwaye amaqondo obushushu kunye neemeko zokusingqongileyo zixhomekeke kuthambiko lwemitha yelanga. Ndiyathemba ukuba ngolu lwazi ungafunda ngakumbi malunga nee-solstices kunye neequinoxes.