1. Aim: The Sun’s path each Season
Do Now:
In your notes what two factors help create the seasons.
Then, explain what these two factors are.
Tilt and Revolution

2. - Zenith – directly above an observers head.
I. Celestial Sphere
Celestial Sphere – an imaginary “dome” around the planet with celestial objects attached to it.
- Zenith – directly above an observers head.
Celestial objects are seen in the sky but are not in our atmosphere.

3. Why do these objects appear to rise in the East and set in the west?
II. Celestial motion
Why do these objects appear to rise in the East and set in the west?
Objects appear to rise in the east and set in the west and move counterclockwise along curved paths.
- Polaris is at the center of these curved paths.
Time elapsed photography of stars from Hawaii.
In the Northern Hemisphere, celestial objects appear to move into the Southern Sky.

4. ** The noon sun is highest in summer and lowest in winter.
                                                
                                                
                                                
** The noon sun is highest in summer and lowest in winter.
This is why days are longer in the summer

5. Take a worksheet from the back bottom bin.
You can use this worksheet to take notes on the next couple of slides or you can write the notes in your notebook and use the worksheet to study/practice the drawings..

6. W S N E III. The Seasons Winter: (tilted away from the sun)
Winter Solstice December 21st
Sun is directly over head at the Tropic Of Capricorn (23.50 S)
Shortest Day Light Hours (about 9 hours)
Horizon W S N E

7. W S N E Summer: (tilted towards the sun) - Summer Solstice June 21st
- Sun is directly over head at the Tropic of Cancer (23.50 N)
- Longest Day Light Hours (about 15 hours)
Horizon W S N E

8. W S N E Spring and Fall: (Equator in-line with sun)
Spring Equinox (March 21st) and Fall Equinox (September 21st)
Sun directly over head at the Equator (00)
Equal number of day light and night time hours.
Horizon W S N E

9. Horizon W S N E

10. The length and position of a shadow depends on the time of day.
IV. Moving Shadows
The length and position of a shadow depends on the time of day.

11. Closure 1:
- Take the back bin top worksheet