What indicates a stronger pressure gradient on weather maps?

The correct answer highlights that close spacing of isobars on weather maps indicates a stronger pressure gradient. This is crucial in meteorology, as isobars represent lines of equal atmospheric pressure. When these lines are closely spaced together, it signifies a rapid change in pressure over a short distance, which typically leads to stronger winds. Essentially, the tighter the isobars, the more significant the pressure difference between the high and low-pressure areas, contributing to more vigorous air movement.

Conversely, wider spacing of isobars indicates a gentler pressure gradient, resulting in lighter winds. Equal spacing implies a consistent change in pressure, rather than a steep gradient. A lack of isobars would suggest a uniform pressure area with no significant weather variations. Understanding this relationship between isobar spacing and pressure gradients is vital for interpreting weather patterns and forecasting meteorological conditions.