Day & Night
The Earth spins on its axis <ul><ul><li>The spinning is called  ROTATION </li></ul></ul><ul><ul><li>The direction of rotat...
As the Earth spins, part of the Earth is facing toward the Sun, and part is facing away from the Sun.
The part of the Earth facing the Sun has daytime
Because the Earth is tilted, different parts of the planet get different amounts of sunlight at different times of the year.
http://ithacasciencezone.com/earthzone/lessons/07meteor/daylight.jpg
In the Spring and Fall http://k12.ocs.ou.edu/teachers/reference/equinox.gif   EQUINOX A day lasts 12 hours and a night las...
In the Summer and Winter http://k12.ocs.ou.edu/teachers/reference/solstice.gif   SOLSTICE During the winter   the Northern...
In the Summer and Winter http://k12.ocs.ou.edu/teachers/reference/solstice.gif   SOLSTICE   During the summer solstice the...
Let’s look at some more computer  models : http://ithacasciencezone.com/earthzone/lessons/07meteor/daynight.htm
What about San Antonio?
Notice our latitude
Notice the latitude of the Tropic of Cancer. Bexar County
How does living so close to the Tropics affect out day length
Upcoming SlideShare
Loading in...5
×

Day_Night

776
-1

Published on

Published in: Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
776
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
34
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Day_Night

  1. 1. Day & Night
  2. 2. The Earth spins on its axis <ul><ul><li>The spinning is called ROTATION </li></ul></ul><ul><ul><li>The direction of rotation is counterclockwise if you are looking at it as if you were floating over the North Pole </li></ul></ul>http://vortex.plymouth.edu/sun/sun.html
  3. 3. As the Earth spins, part of the Earth is facing toward the Sun, and part is facing away from the Sun.
  4. 4. The part of the Earth facing the Sun has daytime
  5. 5. Because the Earth is tilted, different parts of the planet get different amounts of sunlight at different times of the year.
  6. 6. http://ithacasciencezone.com/earthzone/lessons/07meteor/daylight.jpg
  7. 7. In the Spring and Fall http://k12.ocs.ou.edu/teachers/reference/equinox.gif EQUINOX A day lasts 12 hours and a night lasts 12 hours at all latitudes. Sunlight strikes the earth most directly at the equator.
  8. 8. In the Summer and Winter http://k12.ocs.ou.edu/teachers/reference/solstice.gif SOLSTICE During the winter the Northern Hemisphere day lasts fewer than 12 hours and the Southern Hemisphere day lasts more than 12 hours. During the winter solstice, the North Pole has a 24-hour night and the South Pole has a 24-hour day. Sunlight strikes the earth most directly at the Tropic of Capricorn.
  9. 9. In the Summer and Winter http://k12.ocs.ou.edu/teachers/reference/solstice.gif SOLSTICE   During the summer solstice the Northern Hemisphere day lasts more than 12 hours and the Southern Hemisphere day lasts fewer than 12 hours. During the summer, the North Pole has a 24-hour day and the South Pole has a 24-hour night. Sunlight strikes the earth most directly at the Tropic of Cancer.
  10. 10. Let’s look at some more computer models : http://ithacasciencezone.com/earthzone/lessons/07meteor/daynight.htm
  11. 11. What about San Antonio?
  12. 12. Notice our latitude
  13. 13. Notice the latitude of the Tropic of Cancer. Bexar County
  14. 14. How does living so close to the Tropics affect out day length
  1. A particular slide catching your eye?

    Clipping is a handy way to collect important slides you want to go back to later.

×