Presentation on theme: "Tropic Of Cancer 23 1/2 Tropic Of Capricorn 23 1/2 Equator 0 Antarctic Circle 66 2/3 Arctic Circle 66 2/3 North Pole 90 South Pole 90 Prime Meridian O."— Presentation transcript:
Tropic Of Cancer 23 1/2 Tropic Of Capricorn 23 1/2 Equator 0 Antarctic Circle 66 2/3 Arctic Circle 66 2/3 North Pole 90 South Pole 90 Prime Meridian O ° ° ° ° ° ° ° ° EARTH
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
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.
SEPTEMBER AND MARCH 22
Sun Direct Rays from the Sun are at the Tropic of Cancer Equator North Star 23 ½ N° Indirect Rays June 21 st Summer Solstice No daylight below Antarctic Circle No darkness above Arctic Circle
Sun Sept 21/22 First day of Fall, and March 21/22 First Day of Spring Direct Rays Direct rays of the sun are at the Equator (equal amount of daylight and darkness)
Sun 23 ½ S° Dec 21 First day of Winter “shortest day of the year” “Winter Solstice” Direct Rays Indirect Rays Direct rays of the sun reach the furthest southern point constant daylight constant darkness
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.
Sun Direct Rays at the Equator 12 hrs of daylight, 12 hours of darkness Equinox – “equal night” Sept 21 (Autumnal Equinox) March 22 (Spring Equinox)
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
kids.msfc.nasa.gov/Earth/ Seasons/Seasons.htm Animated Gif on seasons from NASA