Question

what device is used in the technique known as magnetometry?
○ lidar
● fluxgate gradiometer
○ uap
○ none of the above
question 39
what form of technology is described as having been used in an analysis of the urban sprawl in the mayan city of tikal, in guatemala?
● lidar
○ uap
○ fluxgate gradiometer
○ none of the above

Explanation:

First Question (Magnetometry Device)

Magnetometry measures magnetic fields. A fluxgate gradiometer (note: likely a typo for "fluxgate gradiometer") is used in magnetometry to detect magnetic field variations. Lidar is for laser - based mapping, UAP is unrelated to magnetometry. So the correct option is the one with Fluxgate gradiometer.

Lidar (Light Detection and Ranging) is used for mapping and analyzing archaeological sites like Tikal's urban sprawl by creating 3D models of the terrain and structures. UAP is not relevant here, and fluxgate gradiometer is for magnetometry, not archaeological site analysis.

Answer:

B. Fluxgate gradiometer (assuming the options are labeled A: Lidar, B: Fluxgate gradiometer, C: UAP, D: None of the above as per typical multiple - choice formatting)

Second Question (Technology for Tikal Analysis)