...and Rocky Mountains. 22. Mathematical geography. Motions of the earth on its axis and around the sun. The inclination of the earth's axis to the plane of its orbit. Causes of the changing seasons and the changing length of the day and night. Long days in summer and...

...it one-fourth the dis- P,ane of t* tart*; Orbit tance to the page and it will represent very nearly the inclination of the earth's axis to the plane of its orbit. Apparent Motion of the Sun. — The yearly revolution of the earth, Combined With the in- The thaded...

...cultivate the sense of rhythm, (c) Give some devices for ear training. Geography. (Answer any five.) 1. If the inclination of the earth's axis to the plane of its orbit were 15° what would be the width of the Torrid zone? Of the Temperate zones? Of the Frigid zones?...

...her abundant store and teach them easily ; but a teacher who is puzzled as to the real meaning of " the inclination of the earth's axis to the plane of its orbit " has no power of selection, and her teaching is heavy. Unhappily there is many a teacher who is thus...

...throughout the year. , , Another cause of variation which produces a similar effect to a smaller degree is the inclination of the earth's axis to the plane of its orbit round the sun. If, however, we take the average or mean value of this interval for a complete year,...

...comparatively easy. Thirdly, the difficulty to an adult is not in understanding the diagrams showing the inclination of the Earth's axis to the plane of its orbit, and the persistence of the axis in pointing in the same direction throughout its whole annual course...

...hemisphere plot the prime meridian. 3. Locate the zones and the prime meridian on a globe. V. Problems: 1. The inclination of the earth's axis to the plane of its orbit is 23 1/2 degrees, and each of the zone boundaries is either 22>l/2 degrees from a pole or 23^4 degrees...

...cumulative effect is possible with regard to the obliquity of the ecliptic, that is to say, with regard to the inclination of the earth's axis to the plane of its orbit. Schiaparelli l treats the problem in a more general manner, making no initial assumptions as to total...

...causes which combine to give us our change of seasons: the revolution of the earth around the sun, and the inclination of the earth's axis to the plane of its orbit. 13. The Measurement of Time. — Experiment 9. — On a fanday place a sundial in an exposed position,...

...shining? 6. What causes day and night? 7. Why do day and night vary in length? 8. How many degrees is the inclination of the earth's axis to the plane of its orbit? 9. What is the position of the earth with reference to the sun on June 21? September 22? December 21...