Reason for the Seasons

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Reason for the Seasons Foldable

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Reason for the Seasons. Foldable. The moon rotates on it’s axis once every 27 days – revolves around the Earth every 27 1/3 days. The Earth revolves around the Sun once every 364 ¼ days. The revolution around the sun is called orbit. - PowerPoint PPT Presentation

Transcript of Reason for the Seasons

Page 1: Reason for the Seasons

Reason for the Seasons

Foldable

Page 2: Reason for the Seasons

The moon rotates on it’s axis once every 27 days – revolves around the Earth every 27 1/3 days

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The Earth revolves around the Sun once every 364 ¼ days. The revolution around the sun

is called orbit. The Earth rotates on its axis

once every 24 hours (once a day)

Earth is tilted on a 23 ½ degree axis

Counter-clockwise rotation of Earth; Earth revolves counter-clockwise around the sun.

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Solstices - days when Earth is most tilted towards the sun; June 21 or away from the sun December 21.

Equinoxes – Days when Earth is not tilted and sun directly over the equator – 2 days when hours of daylight almost equal hours of darkness.

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Day and Night• Light can only travel in a

straight line. It cannot travel around the curvature of the Earth to illuminate the other side.

• The Earth’s own shadow makes the night side of the Earth dark

• One half of the Earth is always lit, while the other side is in darkness

• The line between the lit portion of the Earth and the dark side of the Earth is called the Terminator

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