Geodesy

Question 1

Geodesy

Answer 1

Science of Earth measurement

Question 2

Earth is what shape?

Answer 2

A spheroid or elipsoid

Question 3

Latitude

Answer 3

East to west coordinates (x,y)

Question 4

Longitude

Answer 4

North to south coordinates

Question 5

Graticule

Answer 5

Combination of latitude & longitude with 20 degree spacing

Question 6

Ellipsoid

Answer 6

Smooth, regular, geometric, used to compute coordinates

Question 7

Geoid

Answer 7

Most precise and accurate, approximates mean sea level

Question 8

Datum

Answer 8

Defines the size and shape of Earth and some tie point that fixes the ellipsoid

Question 9

Horizontal Datum

Answer 9

Specifies locations in terms of geodetic latitude and longitude computed from a reference ellipsoid

Question 10

Vertical Datum

Answer 10

Determines elevation regarding to the mean sea level and relates to the geoid

Question 11

Coordinate system

Answer 11

Numeric system for specifying location measurements and provides the means to measure distance, direction, and size

Question 12

Geographical coordinate system

Answer 12

Latitude and longitude are angular values

Question 13

GCS

Answer 13

Defines shape of the Earth

Question 14

PCS

Answer 14

Used to show the 3D Earth into 2D flat sheet

Question 15

SPC

Answer 15

State plane coordinate system- several zones per state

Question 16

VTM

Answer 16

Universal transverse Mercator coordinate system- subdivided into 60 zones