Question

question 9 2 ptsevery fifth contour line on a topographic map is typically an index contour, which is darker or wider and labeled with elevation.○ true○ falsequestion 10 2 ptswhat is the contour interval?○ the time it takes to create a contour line○ the spacing between contour lines representing different elevations○ the distance between the map and the ground○ the scale of the map

Explanation:

For Question 9: Index contours on topographic maps are every 5th contour line, designed to be darker/wider and labeled with elevation for easier reading.
For Question 10: The contour interval is the vertical elevation difference between adjacent contour lines, which matches the description of the spacing representing different elevations.

Answer:

Question 9: True
Question 10: The spacing between contour lines representing different elevations