Laplace stations are geodetic positions on the earth's surface where _______________________.
Geodetic latitude, longitude, and directions are measured
The ellipsoid intersects the geoid
The normals to the geoid and ellipsoid are parallel
Astronomic longitude and azimuth are measured
Astronomic observations (latitude and longitude) give a direction with respect to the
Normal to the ellipsoid
The variation of the earth's gravity, with respect to latitude, is caused by two factors--the
____________________ and the earth's ellipsoidal shape.
Varying densities of the earth's masses
Differences in elevations on the earth's surface
Rotation of the earth
Makeup of the mantle
The theoretical value of gravity represents the _______________________________________.
A. Force of the earth's attraction due to gravity, minus observed gravity
B. Force of the earth's attraction due to gravity, minus the gravity anomaly
C. Force of the earth's attraction due to gravitation, minus the centrifugal force due to rotation of
D. Observed gravity, minus the force of the earth's attraction due to gravity
In surveying, the pendulum apparatus is used to find the _______________________________.
Theoretical gravity at a station
Early-tide correction factor
Which of the following is not a parameter to a horizontal geodetic datum?