Which of the following pair of coordinates correspond to Seoul, South Korea? Sel

Question

Which of the following pair of coordinates correspond to Seoul, South Korea?

Select one:

a. +43* 35', +39* 43'

b. +34* 03', -118* 14'

c. +37* 31', +127* 01’

d. +37* 46', +122* 25'

e. +37* 46', -122* 25’

Tissot's indicatrix reveals which types of distortions from the map projection process? (select all that apply)

Select one or more:

a. longitude

b. area

c. distance

d. angles

e. shape

f. the graticule

The latitude circle at -23° 26 16 is also known as the Answer?

Which of the following describe a geoid? (select all that apply)

Select one or more:

a. It is the identical to a perfectly spherical globe

b. It is an accurate 3-dimensional model of the earth

c. It is used to determine benchmarks for latitude and longitude

d. It is the benchmark for measuring elevation, i.e., mean sea level

e. Landforms are grossly distorted on it

Explanation / Answer

Seoul is the capital of South Korea and is the largest city in it. The coordinates of latitude and longitude of Seoul are 37degree 31' 3600" N and 127 degree 1' 28.6032''. So c. +37* 31', 127*01 corresponds to coodiantes of Seoul.

Tissot indicatix is a graphical tool in identifying the distortion in shape, size and orientation of ellipses that were originally circles. In map projection process a circle is projected onto a flat surface, the result of projection is an ellipse in which the semi major and minor axis are the two principal directions where the scale of distortion is maximum and minimum. In map projections. there are distortions of shape, area ,distance and direction or azimuth measured in terms of angle from north. So area, distance, angle shape are the distortions in map projection process.

The latitude of circle at 23 degree 26 ' 16" is also known as Tropic of cancer. During the summer solistice which occurs either at June 21 or 22 of every year the sun rays are exactly perpendicular over the tropic of cancer.

Geoid defines the shape of the oceans would be under the influence of gravity and rotation while not considering the affects of other forces like winds and tides. It is the equipotential surface that will coincide with the mean surface of the ocean if both the oceans and the atmosphere were in equilibrium. The geoids are particular used for describing elevation. The surface of geoids is irregular.

The properties which describe a geoid are:

b.It is an accurate 3 dimensional model of earth

d.It is the benchmark for measuring elevation

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