| 1. |
_______________________ is one of the earth sciences. |
|
|
Geodesy |
|
|
Geology |
| 2. |
A major topic of geodesy is _________________. |
|
|
The shape and size of the earth |
|
|
The gravity field of the earth |
|
|
Point positioning |
|
|
All of the above |
| 3. |
When traveling north at night, the north pole star appears ________________. |
|
|
To get higher in the sky |
|
|
To go lower in the sky |
| 4. |
When traveling north by day, a man’s shadow at noon becomes ____________________.
|
|
|
Smaller |
|
|
Longer |
| 5. |
Erathosthenes, who lived in Alexandria, Egypt, in the third century BC, was a genius who computed the size of the earth from watching a sun dial cast its shadow at noon on a certain day. |
|
|
|
True |
|
False |
| 6. |
In the 17th century, it was not possible to measure distances and gravity precisely enough to notice that the curvature of the earth was not the same at different places. |
|
|
True |
|
|
False |
| 7. |
Three surfaces of the earth are: |
|
|
The topography, the geoid, and the ellipsoid |
|
|
The ground, the geoid, and the ellipsoid |
| 8. |
Geoidal maps give the geoidal heights in relation to the _______________. |
|
|
Topography |
|
|
Ellipsoid |
| 9. |
AMS is also called as ______________________. |
|
|
TOPOCOM |
|
|
Ellipsoid |
| 10. |
The earth’s attraction called gravity does not cause things to fall. |
|
|
True |
|
|
False |
| 11. |
At the seashore the difference between the denser land mass and the less dense water will have the same effect. |
|
|
True |
|
|
False |
| 12. |
The science of _____________ is necessary to explain and evaluate the influence of gravity and to determine corrections to apply to our measurements. |
|
|
Geodesy |
|
|
Geology |
| 13. |
The deflection of the horizontal is the angle between the observed vertical direction of the plumb line and the normal to the ellipsoidal model. |
|
|
True |
|
|
False |
| 14. |
The angle of deflection equals the angle of ____________________. |
|
|
Warping |
|
|
Refraction |
| 15. |
The level surface which coincides with mean sea level is called _________________. |
|
|
Ellipsoid |
|
|
Geoid |
| 16. |
Astrogeodetic deflections use _________________. |
|
|
Surface gravity |
|
|
Triangulation |
|
|
Geodesy |
| 17. |
Gravimetry use _____________________. |
|
|
Surface gravity |
|
|
Triangulation |
|
|
Geodesy |
| 18. |
Traverse methods use ___________________. |
|
|
Angles |
|
|
Distances |
|
|
Angles and distances |
| 19. |
Longitude refers to __________________. |
|
|
Set of circles of parallel to the equator |
|
|
Set of ellipses |
| 20. |
Figure 30 represents the deflection of the ______________. |
|
|
Horizontal |
|
|
Vertical |
| 21. |
A boat on the horizon is represented in ________________.
|
|
|
Figure 1 |
|
|
Figure 2 |
|
|
Figure 3 |
| 22. |
The Eratosthenes concept is represented in ______________________.
|
|
|
Figure 1 |
|
|
Figure 3 |
|
|
Figure 4 |
| 23. |
The ellipsoid is represented in ___________________.
|
|
|
Figure 6 |
|
|
Figure 7 |
|
|
Figure 8 |
| 24. |
The earth’s shape could be told by the satellite data and this is pictorially represented in _________________.
|
|
|
Figure 6 |
|
|
Figure 7 |
|
|
Figure 8 |
| 25. |
The warping of the level surface is represented in ___________________.
|
|
|
Figure 16 |
|
|
Figure 17 |
|
|
Figure 18 |
|
