diffriante between high and low pressure of class seven model activities
Answers
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Low-pressure
A low-pressure area is a region where the atmospheric pressure at sea level is below that of surrounding locations. Low-pressure systems form under areas of wind divergence that occur in upper levels of the troposphere.
A low-pressure system is formed due to localized heating caused by greater sunshine over deserts and other landmasses.
High-pressure
High-pressure systems are normally associated with light winds at the surface and subsidence at the lower portion of the troposphere. Subsidence dries out an air mass by adiabatic or compressional heating. Hence, high pressure usually results in clear skies. Since no clouds are present to obstruct the incoming shortwave solar radiation, the temperature rises during the day. At night, due to the absence of clouds, the outgoing longwave radiation is not absorbed and results in cooler low temperatures in all seasons. A high-pressure system swirls in the opposite direction from a low-pressure system. This type of flow is known as anticyclonic flow.
Answer:
A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. ... A high pressure system has higher pressure at its center than the areas around it. Winds blow away from high pressure.