Chapter 3 geodesy and the shape of the earth

Question 1

Reference points

Answer 1

used to locate places on Earth. A datum is based on measures of angles and distances between reference points.

Question 2

Challenges

Answer 2

Remember, the movement of mass will change the local gravitational attraction and will thus introduce surveying problems.

Question 3

Mass and gravity

Answer 3

It quickly became apparent that mass and gravity introduced errors in surveying that had to be accounted for.