Lines on a weather map that connect areas of equal air pressure are
a. isobars
c. barometric lines
b. contour lines
d. pressure bars
a barometer is used to measure
a. wind speed
c. air pressure
b. wind direction
d. precipitation location

Lines on a weather map that connect areas of equal air pressure are isobars.

The distribution of isobars go hand in hand with the magnitude and direction of winds and can be used to predict the weather.  

A barometer is used to measure air pressure.

A barometer is used in meteorology to because the pressure tendency can help forecast weather.

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