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Tropic Of Cancer 23 1/2
Tropic Of Capricorn 23 1/2
Equator 0
Antarctic Circle 66.5
Arctic Circle 66.5
North Pole 90
South Pole 90
Prime Meridian O
°
°
°
°
°
°
°
°
EARTH
Equator 0°
Earth Axis (through the middle of the earth, not on its outside (That’s the Prime Meridian)
23.5° NorthAxis is pointed toward the North Star
Latitude (Lat is Flat) are lines that run parallel from pole to pole. Known as “parallels” or “Ladder Lines”Zero degree at the equator to 90° degree at the poles
Equator 0°
10° N
10° S
80° N
90° North Pole
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
Prime Meridian 0°
15°W
30°W
Longitude, Time = every 15° = 1 hour on the clock
15°W
30°W
AMOUNT OF DAYLIGHT AT AMOUNT OF DAYLIGHT AT EARTHEARTH’’S SURFACES 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.
Summer Solstice June 21st
Indirect Rays
direct Rays
Indirect Rays
The most southern point to receive any sunlight
Winter Solstice Dec 21st
Indirect Rays
Indirect Rays
Direct Rays
The most Northern point to receive any sunlight
Autumnal Equinox Sept 21st, Spring Equinox Mar 21-22
Indirect Rays
Indirect Rays
Animation Link
http://astro.unl.edu/naap/motion1/animations/seasons_ecliptic.html
Precipitation• Moisture cools and condenses. Think of sweat on a drink bottle.
• 3 types
1. Convectional
• Sun heats the moist air and rain clouds form. Usually tropical.
2. Orographic
• Mountains force moist air upwards and rain or snow forms when moisture cools.
• Precipitation typically falls on windward side of mountain (the side on which wind is blowing) since it’s blocked by the mountain from falling on the other side. Rain shadow.
SnowNo Snow