1. SEASONS AND THE SUN PATH

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
Tilt of the Earth
23 ½ o

7. 2. Earth’s Revolution around the Sun

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

9. Longest day of the year

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

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

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

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

15. Shortest day of the year

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

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 *
25o
Is the Sun at Zenith at Norwich? NO
Describe where sun rises and sets.
Rises south of east and sets south of west

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

20. 12 hours of light and dark everywhere on the Earth

21. Equal Days and Equal Nights everywhere on Earth
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
Zenith *
48o
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

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