Question

what type of sensor is used to measure the depth of the ocean? 5 point
o air bubbles
o a long rope
o radar
o sonar
o other:

every point on this type of line______ has the same elevation 5 point
o squiggle lines
o red lines
o contour lines
o base lines

Explanation:

For the first question, sonar (Sound Navigation and Ranging) sends sound waves into the water, and by measuring the time it takes for the echo to return, the depth can be calculated. For the second question, contour lines on a topographic map connect points of equal elevation.

Answer:

1. D. Sonar
2. C. Contour lines