12. An ohserver is located at the North Pole (sive numerical answers: Figure is

Question

12. An ohserver is located at the North Pole (sive numerical answers: Figure is general, not for this situation) a) what is the altitude of the horizon? b) what is the altitude of the Equator c) what is the declination of Zenith?.. d) what is the altitude of the Sun on June 21 e) what is the altitude of the Sun on December 21 0 what is the altitude of the Sun on March 21 and on September 21. NCP 13. An observer is located on the Equator on Earth (give numerical answers; Figure is general, m this situation) a) what is the altitude of the horizon? b) what is the altitude of the Equator?....... c) what is the declination of Zenith?. d) what is the altitude of the Sun on June 21s ? . e) what is the altitude of the Sun on December 2 0 what is the altitude of the Sun on March 21" and on September

Explanation / Answer

12. When the observer is at north pole.

c. Diclination of zenith is equal to the observer's latitude. So answer is +90 degrees.

d. June 21 is the summer solstice in the northern hemisphere. The position of sun is 90-X+23.5=90-90+23.5= 23.5 degrees.

e. December 21 is the winter solstice in the northern hemisphere.  The position of sun is 90-X-23.5=90-90-23.5= -23.5 degrees.

f. March 21 is the vernal equinox and september 21 is the autumnal equinox. The position of sun is 0 degree.

13. When the observer is at equator.

a. 0 degree

b. 0 degree

c. Diclination of zenith is equal to the observer's latitude. So ansher is 0 degree.

d. 67 degrees

e. 67 degrees

f. 90 degrees

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