Tilt of the Earth’s Rotational Axis

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Presentation transcript:

Tilt of the Earth’s Rotational Axis The Seasons Tilt of the Earth’s Rotational Axis

Spin Axis – Rotational Axis Rotational Axis tilted by ~ 23.5 degrees with respect to orbital plane (ECLIPTIC)

Tilt is cause of Seasons Winter in Northern Hemisphere – notice Artic is in complete darkness 66.5 degrees

Seasonal Changes Not drawn to scale – 66.5 degrees Artic circle or Ant Artic circle

Diurnal Motion from Different Latitudes North Pole, Equator, Kitt Peak 31 degrees

Diurnal Motion of Sun at different times of the Year from ~40 degrees Vernal Equinox, Autumnal Equinox, Summer Solstice, Winter Solstice

Summer and Winter Direct and indirect sunlight