Advanced Geography . <y. re are other belts neither so hot nor so cold. Un either ,. /. ,, . ^my^ «^c\ tical rays shine south, or =F^. ^c-^v side of the hot belt lies a belt of land and sea on which tlie equator ^ut they _ Mf ^0 *\ the suns rays fall with but little slant. We will call Illf^\ ??^% \ these two belts the warm belts. x The changes of seasons ^ ^ / _\§^,o ? • -J t, , ,i in lxi 11-i-ij i • i and the lengths of davs and r *!?::--- ?;s<ks» --J -Uetween the warm belt and the cold belt, on each side . ,. ..f , \ --^ ^^^ / _ nights in the zones are sub- ^ V ^ ^^\^ / of the equ
Advanced Geography . <y. re are other belts neither so hot nor so cold. Un either ,. /. ,, . ^my^ «^c\ tical rays shine south, or =F^. ^c-^v side of the hot belt lies a belt of land and sea on which tlie equator ^ut they _ Mf ^0 *\ the suns rays fall with but little slant. We will call Illf^\ ??^% \ these two belts the warm belts. x The changes of seasons ^ ^ / _\§^,o ? • -J t, , ,i in lxi 11-i-ij i • i and the lengths of davs and r *!?::--- ?;s<ks» --J -Uetween the warm belt and the cold belt, on each side . ,. ..f , \ --^ ^^^ / _ nights in the zones are sub- ^ V ^ ^^\^ / of the equator, lies another belt on which the rays fall with jects that can best be ex- \ Slf-%v /^ a great deal of slant. These two belts are the cool belts. plained by the teacher with y-?r,c -y a globe in hand. ^1^%.? Between the heat belts, there are no sudden changes from hot to 2 The orbit is an ellipse warm, from warm to cool, or from cool to cold. All the way from with the sun near the center. Figure 20 ZONES OF LIGHT. shine farthest south on the twenty-first day of December, — atabout Christmas time. Then the northern winter and the southernsummer begin. See figure J/.. Our spring opens on thetwenty-first day of March, when the vertical raysfall on the equator, and the days and nights areeverywhere of equal length. See figure 2. The first day of our autumn (twenty-secondof September) brings the earth to that partof its orbit where the sun again shinesover the equator. See figure 2. Topics : — Earth revolves ; orbit; axisand north star; where suns rays arestrongest; day when each season beginsand where vertical rays then fall. 16. Zones of Light. The line around the earth, upon whichthe vertical rays fall when farthest north,is called the troipic of cancer) The line upon which the vertical rays fall whenfarthest south is called the tropic of Capricorn. The tropics are at about one fourth the distance (23^-°)from the equator to the poles. The belt of land andwater
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