Question

you can locate regions of low wind speed on a weather map by locating:
a. regions where a warm front slides under a cold front
b. regions where the pressure is highest
c. regions where isotherms are spaced far apart
d. regions where isobars are spaced far apart

Explanation:

• Option A: A warm front slides over a cold front, not under. This is related to frontal systems and not directly to wind speed.
• Option B: High - pressure regions (anticyclones) can have light winds, but the key factor for wind speed on a weather map is the spacing of isobars.
• Option C: Isotherms are lines of equal temperature. They are not related to wind speed determination.
• Option D: Isobars are lines of equal pressure. When isobars are spaced far apart, the pressure gradient force (which drives wind) is small. A small pressure gradient force results in low wind speed.

Answer:

D. regions where isobars are spaced far apart