| A | B |
|---|
| Tilt | the earth is tilted 23.5 degrees on its axis |
| Latitiude | The degrees above above the equator- in the N. hemisphere. Effects the length of your day, because it effects the angular Ht. of the sun. |
| Equinox | means equal days and nights (12 hrs of each) |
| Summer Solstice | June 20-23 in the N. Hemisphere (15 hrs daylight/9 of darkness) Longest day of the year.Sun rises 11.5 North of East and sets 11.5 N. of West. |
| Winter Solstice | December 20-22 in the N. Hemisphere. (9 hrs daylight/15 of darkness) Shortest day of the year.Sun rises South of East and sets 11.5 S. of West |
| Spring Equinox | March 21 in N. Hemisphere (12 hrs of each)Sun rises exactly east and sets exactly west. |
| Fall Equinox | September 20-23 in N. Hemisphere (12 hrs of each) Sun rises exactly east and sets exactly west. |
| Axis | Imaginary point around which a circular object spins |
| Equator | 0 degrees latitude, an imaginary line that separates the Northern Hemisphere from the Southern. |
| Poles | 90 degrees latitude on the earth. The N. Pole is 90 latitude above the equator. Where the Sun never sets in summer. |
| 23.5 degrees | amount of earth's tilt |
| Sun | Provides all the heat and light for earth. 1 million miles in diameter. 1.3 milliom km |
| Earth's Oval Orbital path | as the earth goes around counter clockwise the angle of the earth to the sun determines where the suns heat strikes the earth - thus our temperature at that position |
| Distance from sun | The earth averages 93,000,000 miles from the sun. We are actually closest in January. |
| Direction of rotatio/spin of earth | Earth always spins counter clockwise if viewed from above |
| Reason for the Seasons? | The tilt determines the amount od sunlight-heat that stricks the earth |
| Dirction Earth orbits the sun | Counter-clockwise, if viewed from above |
| longest day | summer |
| shortest day | winter |
| Equal days | Fall and Spring. See equinox |
