Reasons For The Seasons

Front

Revolution

Back

Earth’s orbit around the sun in 365.25 days.

Front

Rotation

Back

Earth spinning on its axis 24 hours a day.

Front

Earth’s Axis

Back

Is tilted at 23.5 degrees and is either towards or away from the sun half of the year.

Front

Vernal Equinox

Back

It is otherwise known as the Spring Equinox. It is on March 21.

Front

Autumnal Equinox

Back

Is otherwise known as the Fall Equinox. It is on September 22.

Front

Winter Solstice

Back

Is June 21 in the Southern hemisphere and December 21 in the Northern hemisphere.

Front

Summer Solstice

Back

Is December 21 in the Southern hemisphere and June 21 in the Northern hemisphere.

Front

Equinox

Back

Is when the day and night are exactly 12 hours long and the sun crosses the celestial equator.

Front

Solstice

Back

Is when the sun reaches its greatest distance North and South of the equator twice a year.

Front

June 21

Back

It is summer in the Northern hemisphere and the longest day. It is winter in the Southern hemisphere and the shortest day.