6.

Laplace stations are geodetic positions on the earth's surface where _______________________.

A.

Geodetic latitude, longitude, and directions are measured

B.

The ellipsoid intersects the geoid

C.

The normals to the geoid and ellipsoid are parallel

D.

Astronomic longitude and azimuth are measured

7.

Astronomic observations (latitude and longitude) give a direction with respect to the

___________________________________________________________________________________.

A.

Normal to the ellipsoid

B.

Ellipsoid

C.

Spheroid

D.

Geoid

8.

The variation of the earth's gravity, with respect to latitude, is caused by two factors--the

____________________ and the earth's ellipsoidal shape.

A.

Varying densities of the earth's masses

B.

Differences in elevations on the earth's surface

C.

Rotation of the earth

D.

Makeup of the mantle

9.

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

the earth

D. Observed gravity, minus the force of the earth's attraction due to gravity

10.

In surveying, the pendulum apparatus is used to find the _______________________________.

A.

Theoretical gravity at a station

B.

Absolute acceleration of gravity

C.

Early-tide correction factor

D.

Gravitational constant

11.

Which of the following is not a parameter to a horizontal geodetic datum?

A.

Longitude

B.

Flattening

C.

Gravimetric data

D.

Equatorial radius

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