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Glades Costa

on 6 April 2014

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Transcript of Equinócio

A palavra "equinócio" vem do latim aequus (igual) e nox (noite) e significa "noites iguais", onde o dia e a noite têm 12 horas de duração.
Origem da palavra
Em março ocorre o equinócio que marca o início da primavera no hemisfério norte e do outono no hemisfério sul.
Em setembro o equinócio marca o início do outono no hemisfério norte e da primavera no hemisfério sul.
Quando ocorrem
Instante em que o sol cruza com o plano do equador celeste.
Dia e noite com a mesma duração
Full transcript