Asked by Anna
what is a low pressure system? a system where air is rising and cooling leading to cloudy and stormy weather, a system where air is sinking and spreading out resulting in fair weather, the point at which the air is holding the maximum amount of water vapor it can at a given temperature
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The correct choice is: "a system where air is rising and cooling leading to cloudy and stormy weather."
Brief explanation: a low-pressure system is an area where the surface pressure is lower than the surroundings, causing air to converge at the surface and rise. Rising air cools, moisture condenses, and clouds and precipitation often form (storms, fronts, cyclones). By contrast, a high-pressure system has sinking, diverging air and typically brings fair weather. The third option describes saturation (or the saturation point/dew point), not a low-pressure system.
Brief explanation: a low-pressure system is an area where the surface pressure is lower than the surroundings, causing air to converge at the surface and rise. Rising air cools, moisture condenses, and clouds and precipitation often form (storms, fronts, cyclones). By contrast, a high-pressure system has sinking, diverging air and typically brings fair weather. The third option describes saturation (or the saturation point/dew point), not a low-pressure system.
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