Q. What is an equinox?

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Q. Why does earth receive 12 hours of sunshine during equinox?

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Q. What is the sun’s declination angle during equinox?

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Q. The equinoxes are vernal equinox and autumnal equinox respectively.

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Q. On summer solstice, the sun is above the horizon in northern hemisphere.

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Q. Which of the following best describes the motion of sun from autumnal equinox to winter solstice?

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Q. What is sun’s declination angle during earth’s motion from autumnal equinox to winter solstice?

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Q. During which of the following periods is the earth below the plane of sun?

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Q. What is the sun’s declination during earth’s motion from vernal equinox to summer solstice?

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Q. How is latitude of a location on earth defined?

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Q. The lines joining North and South pole of earth are called _____

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Q. When does the autumnal equinox occur?

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Q. When does the vernal equinox occur?

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Q. Solar radiation spectrum is close to _____

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Q. Which of the following indicates the position of any point on earth?

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Q. What is the range of sun’s declination angle throughout the year?

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Q. What the hour angle?

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Q. Altitude angle is the _______

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Q. Hour angle is a measure of time of day with respect to solar noon.

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Q. The altitude angle is maximum at noon.

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