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تایید

"perturbation” means ...... ? (0.5 نمره)



تایید

The point of closest approach to the sun is called..... ? (0.5 نمره)



تایید

Choose the nearest meaning to “radically" ? (0.5 نمره)



تایید

Choose the best answer for following word “precise” ? (0.5 نمره)



تایید

Every point on the Earth's surface has a gravity acceleration, its determination is ....... ? (0.5 نمره)



تایید

What does “denote” mean? (0.5 نمره)



تایید

What is NOT the output of the surveying? (0.5 نمره)



تایید

What is the synonym of each word? 1-height 2-perpendicular 3-objective 4-pure


  (2 نمره)



تایید

The spin axis is inclined with respect to the ecliptic by an almost angle of about 66.5°, so the angle ε between equatorial and ecliptical planes is about 23.5° . Evidently, if it were not for this inclination, called obliquity, the earth would spin around an axis perpendicular to the ecliptical plane, and days and nights would be equally long -12 hours- at any time and any place on the earth. Because of the obliquity, the sun shines longer on the Northern Hemisphere for one-half of The earth’s revolution, and then on the Southern Hemisphere for the second half.

1-The angle approximately 66.5° is ………? (1 نمره)



تایید

The spin axis is inclined with respect to the ecliptic by an almost angle of about 66.5°, so the angle ε between equatorial and ecliptical planes is about 23.5° . Evidently, if it were not for this inclination, called obliquity, the earth would spin around an axis perpendicular to the ecliptical plane, and days and nights would be equally long -12 hours- at any time and any place on the earth. Because of the obliquity, the sun shines longer on the Northern Hemisphere for one-half of The earth’s revolution, and then on the Southern Hemisphere for the second half.

2-Obliquity is …….. (1 نمره)



تایید

The spin axis is inclined with respect to the ecliptic by an almost angle of about 66.5°, so the angle ε between equatorial and ecliptical planes is about 23.5° . Evidently, if it were not for this inclination, called obliquity, the earth would spin around an axis perpendicular to the ecliptical plane, and days and nights would be equally long -12 hours- at any time and any place on the earth. Because of the obliquity, the sun shines longer on the Northern Hemisphere for one-half of The earth’s revolution, and then on the Southern Hemisphere for the second half.

3-Choose the underlined word’s meaning: (1 نمره)



تایید

Differential leveling provides a means of accurately measuring ---(1)--- differences between points some tens of meters apart. A level is set up on a tripod and leveled so that the line of sight is horizontal. A graduated staff is held vertically over the first point and a reading made ---(2)--- the intersection of the cross-hair with the image of the staff (---(3)---). The same (or an identical) staff is then held vertically over the second point and a further reading made (---(4)---). (2 نمره)



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