Question 3: Stereographic pairs of ________ have often been used to make topographic maps by imagery and terrain analysts in trafficability and highway departments for potential routes.
Question 5: ________ is an example of active remote sensing where the time delay between emission and return is measured, establishing the location, height, speed and direction of an object.
Question 9: This data revealed minute perturbations in the Earth's gravitational field (________) that may be used to determine changes in the mass distribution of the Earth, which in turn may be used for geological or hydrological studies.
Question 10: Seismograms taken at different locations can locate and measure ________ (after they occur) by comparing the relative intensity and precise timing.