Global Studies Name Monsoons Practice Monsoons are seasonal ________ that dominate the weather patterns of _______ or _________________. The word Monsoon means ________ in Arabic. In order to understand monsoons, it is helpful to understand atmospheric pressure, gradient pressure, differential heating and the coriolis force. The most important factor is _________________. Air masses are described based upon the amount of air pressure. ______________ air masses are generally heavier and cooler than low-pressure air masses. ______________ air masses are generally lighter and warmer than high-pressure air masses. Low-pressure systems are associated with ______ . _____________________ determine how air masses move in relation to each other. Air masses flow from ___________ (cold) to ____________ (warm). ________________ refers to the variation in the way that land and water heat and cool. Landmasses tend to heat _________than bodies of water, but bodies of water hold the heat ______. As a result, landmasses _____ and _____ faster than bodies of water. Winds are described by the direction ________ which they are blowing. During an average summer day at the beach, you are most likely to experience a ____ breeze. A __________ system forms over the land, because it is ______ than the water. A ___________ system forms over the water, because the water is _______ than the land. Since winds blow from ____ to ____ pressure, the winds blow _____ the sea. On a summer evening, you most likely will experience a ____ breeze. This occurs because the land ______ faster than the water, so the _________system forms over the land. The winds then blow ______the sea. Another important factor is the __________, which causes air masses to be ________because of the forces created by the ________ of the earth. There are __ monsoon seasons in South Asia. The ____monsoon occurs in the summer and begins in late ___. The ____monsoon occurs in the winter and begins in ______________. During the wet monsoon, a warm__________________ system settles over the subcontinent. A cool __________ system forms in the Indian Ocean. The winds blow from the _____to the _____, bringing cool, moist air. The dry, warm air over the continent _____, cools and it starts to rain. Mountains serve to ___this weather system, creating a _________ on the southern or __________side of the mountains. This whole process is _______ during the dry monsoon. In the winter, a cool, dry ___________ system forms over the subcontinent and a warm _______________ system forms over the Indian Ocean. As a result, the winds blow from the _____ toward the ____, causing a long dry season. Global Studies Name KEY Monsoons Practice Monsoons are seasonal winds that dominate the weather patterns of South Asia or the Indian Subcontinent. The word Monsoon means season in Arabic. In order to understand monsoons, it is helpful to understand atmospheric pressure, gradient pressure, differential heating and the coriolis force. The most important factor is atmospheric pressure. Air masses are described based upon the amount of air pressure. High-pressure air masses are generally heavier and cooler than low-pressure air masses. Low-pressure air masses are generally lighter and warmer than high-pressure air masses. Low-pressure systems are associated with rain. Pressure gradient forces determine how air masses move in relation to each other. Air masses flow from high-pressure (cold) to low-pressure (warm). Differential heating refers to the variation in the way that land and water heat and cool. Landmasses tend to heat faster than bodies of water, but bodies of water hold the heat longer. As a result, landmasses heat and cool faster than bodies of water. Winds are described by the direction from which they are blowing. During an average summer day at the beach, you are most likely to experience a sea breeze. A low-pressure system forms over the land, because it is warmer than the water. A high-pressure system forms over the water, because the water is cooler than the land. Since winds blow from high to low pressure, the winds blow from the sea. On a summer evening, you most likely will experience a land breeze. This occurs because the land cools faster than the water, so the high-pressure system forms over the land. The winds then blow toward the sea. Another important factor is the coriolis force, which causes air masses to be deflected because of the forces created by the rotation of the earth. There are two monsoon seasons in South Asia. The wet monsoon occurs in the summer and begins in late May. The dry monsoon occurs in the winter and begins in October. During the wet monsoon, a warm low-pressure system settles over the subcontinent. A cool high-pressure system forms in the Indian Ocean. The winds blow from the water to the land, bringing cool, moist air. The dry, warm air over the continent rises, cools and it starts to rain. Mountains serve to trap this weather system, creating a rain shadow on the southern or windward side of the mountains. This whole process is reversed during the dry monsoon. In the winter, a cool, dry high-pressure system forms over the subcontinent and a warm low-pressure system forms over the Indian Ocean. As a result, the winds blow from the land toward the water, causing a long dry season.