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SEASONS AND THE SUN PATH. Altitude – angle of elevation above the horizon Zenith – directly overhead Celestial Sphere - large sphere surrounding the.

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Presentation on theme: "SEASONS AND THE SUN PATH. Altitude – angle of elevation above the horizon Zenith – directly overhead Celestial Sphere - large sphere surrounding the."— Presentation transcript:

1 SEASONS AND THE SUN PATH

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3 Altitude – angle of elevation above the horizon Zenith – directly overhead Celestial Sphere - large sphere surrounding the earth, used to keep references to where celestial bodies lie in the sky.

4 Tropic Of Cancer – 23 ½ o N Tropic of Capricorn - 23 ½ o S Solar Noon - the time of highest sun altitude

5 Insolation – Incoming Solar Radiation (energy we get from the sun) Sun’s Duration – length of time the sun is out = daylight hours Sun’s intensity – higher the sun angle, more direct rays = more energy from sun and higher temperatures.

6 Reasons for the Seasons 1.Tilt of the Earth 23 ½ o

7 2. Earth’s Revolution around the Sun

8 Summer Solstice – June 21 Equator Tropic of Cancer 23 ½ o N Tropic of Capricorn – 23 ½ o S Arctic Circle – 66 ½ o N Antarctic Circle – 66 ½ o S Sun is at zenith at the ? Tropic of Cancer – 23 1/2 o N Earth is tilted toward the sun

9 Longest day of the year

10 North of Arctic Circle will have ______ hours of daylight ? Latitude of Norwich 24

11 Describe Sun at Norwich High Sun Angle – shorter shadows Long Days High intensity of Sun’s rays, therefore its warmer

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13 Sun Path at Norwich on Summer Solstice * Zenith Is the Sun at Zenith at Norwich?NO Describe where sun rises and sets. Rises north of east and sets north of west 71 o

14 Winter Solstice - December 21 equator 23 ½ o S Tropic of Capricorn 23 1/2 o N Tropic Cancer North Pole South pole Arctic Circle – 66 ½ o N Antarctic Circle – 66 ½ o S Sun is at zenith atTropic of Capricorn – 23 1/2 o S Earth is tilted away from sun

15 Shortest day of the year

16 Winter Solstice North of Arctic Circle will have ______ hours of daylight ? 24 Latitude of Norwich

17 Describe Sun at Norwich Low Sun Angle – longer shadows Short Days Low intensity of Sun’s rays, therefore temperatures are not as warm

18 Sun’s Path at Norwich on Winter Solstice Zenith * Is the Sun at Zenith at Norwich?NO Describe where sun rises and sets.Rises south of east and sets south of west 25 o

19 Equinoxes –September 21, March 21 (Autumnal) (Vernal) Earth is Perpendicular to the Sun Equator Tropic of Cancer /2 o N Tropic of Capricorn /2 o S Arctic Circle – 66 1/2 o N Antarctic Circle /2 o S Sun is at zenith at the Equator

20 12 hours of light and dark everywhere on the Earth

21 Latitude of Norwich Equal Days and Equal Nights everywhere on Earth Equinox means equal nights

22 Describe Sun at Norwich Medium Sun Angle – medium shadows 12 hour Days medium intensity of Sun’s rays

23 Sun Path at Norwich on Equinoxes Is the Sun at Zenith at Norwich?NO Describe where sun rises and sets. Sun rises directly east and sets directly west everywhere on the Earth 48 o * Zenith

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27 Time of day of longest shadow: ________ Time of day of shortest shadow: _______ Season with shortest noon time shadow: Season with longest noon time shadow: Sunrise, sunset Noon Summer Winter

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