10. What is the contour interval on this map?
The contour interval is 50 metres. (Each labelled contour rises by 50 m: 0 → 50 → 100 → 150.)
11. Is the slope steep or gentle where the contour lines are very close together? Explain in one sentence.
Where contour lines are very close together the slope is steep, because elevation changes a lot over a short horizontal distance.
12. Estimate the elevation of Point A (give a number in metres and one-sentence explanation).
Estimated elevation: about 140 m — Point A lies between the 100 m and 150 m contours and is closer to the 150 m line, so it is closer to the top of that 50 m interval (roughly 40 m above 100 m).
13. If you walk from the coast (0 m) to the top (inside 150 m), what is the total elevation gain?
The total elevation gain is 150 metres, because you go from 0 m at the coast up to the highest marked contour of 150 m (0 → 150 = 150 m gain).