1. EARTH ° Prime Meridian O ° Arctic Circle 66 2/3 °
North Pole 90
Arctic Circle 66 2/3
Tropic Of Cancer 23 1/2
EARTH
Equator 0
Tropic Of Capricorn 23 1/2
Antarctic Circle 66 2/3
South Pole 90

2. Latitude (Lat is Flat) are lines that run parallel from
pole to pole. “Pieces of Bread” “parallels”
Zero degree at the equator to 90° degree at the poles
Longitude, are lines that run from North Pole to South Pole
“Apple wedges” “Meridians”
Zero degree at the Prime Meridian up to 180°degree on the
other side of the world, then the numbers work there way back to
the Prime Meridian

3. AMOUNT OF DAYLIGHT AT EARTH’S SURFACE
ACTUAL OBSERVATIONS
AS YOU GO FURTHER AWAY FROM THE EQUATOR THE AMOUNT OF DAYLIGHT INCREASES IN THE SUMMER AND DECREASES IN THE WINTER.
THE EQUATOR HAS APPROXIMATELY 12 HOURS OF DAYLIGHT ALL YEAR ROUND
THE NORTH POLE HAS 24 HOURS OF DAYLIGHT IN THE SUMMER AND 24 HOURS OF NIGHT IN THE WINTER.
ON SEPTEMBER AND MARCH 22, ALL AREAS ON EARTH HAVE 12 HOURS OF DAY AND 12 HOURS OF NIGHT.

4. SEPTEMBER AND MARCH 22

5. No darkness above Arctic Circle
June 21st
Summer Solstice
North Star
23 ½ N
No darkness above Arctic Circle
Equator
Direct Rays from the Sun are at the Tropic of Cancer
Sun
Indirect Rays
No daylight below Antarctic Circle

6. JUNE 21

7. Sun Sept 21/22 First day of Fall, and March 21/22 First Day of Spring
Direct rays of the sun are at the Equator (equal amount of daylight and darkness)
Sun
Direct Rays

8. DECEMBER 21

9. 23 ½ S ° Sun Indirect Rays Direct Rays Indirect Rays
Dec 21 First day of Winter “shortest day of the year”
“Winter Solstice”
23 ½ S
Direct rays of the sun reach the furthest southern point
constant darkness
Indirect Rays
Sun
Direct Rays
Indirect Rays
constant daylight

10. EARTH IS TILTED
A TILTED EARTH WOULD EXPLAIN MOST OF THE OBSERVATIONS THAT WE SEE .
THE EARTH IS TILTED AT A 23.5 DEGREE ANGLE.

11. Direct Rays at the Equator
Sept 21 (Autumnal Equinox)
March 22 (Spring Equinox)
Sun
12 hrs of daylight, 12 hours of darkness
Equinox – “equal night”

12. REVOLUTION
THE TILT OF THE EARTH, ALONE, WOULD NOT ACCOUNT FOR THE CHANGE IN THE PATH OF THE SUN.
IF THE EARTH WERE TO REMAIN IN ONE POSITION IN SPACE, ONE HEMISPHERE WOULD EXPERIENCE SUMMER WHILE THE OTHER WOULD EXPERIENCE WINTER.
Portoviejo

13. kids.msfc.nasa.gov/Earth/ Seasons/Seasons.htm
Animated Gif on seasons from NASA