Answer: Option [B]Land and sea-breezes occur due to Convection. Since the sea water radiates less heat than the land, it remains hotter than the land part. Hence the cold air from the land goes through the convection process of air to the seawater and this flow of air is called the Land Breeze. The sea breeze and the land breeze is caused by the convection current of air.
Answer: Option [A]Mediterranean type of climate is characterized by dry summer and wet winter. Mediterranean climate, major climate type of the Köppen classification characterized by hot, dry summers and cool, wet winters and located between about 30° and 45° latitude north and south of the Equator and on the western sides of the continents.
Answer: Option [A]Convectional Rainfall occurs in Equatorial region. The equatorial region receives convectional rainfall during the afternoon on a daily basis. The rainfall happens around 4 p.m, and is known as “4 o'clock rainfall”. The abundant supply of moisture in the air, which provides high humidity, is another reason for the convectional rainfall.
Answer: Option [D]The climate of North America is influence during winter by the tropical air masses. The northward movement of tropical air masses transports warm moist air into the United States, increasing the potential for precipitation. Tropical air masses are generally restricted to the southern states during much of the winter.
Answer: Option [A]The main cause of global climatic change is increase in the content of carbon dioxide in the atmosphere. The main cause of global climate change is Increase in the content of carbon dioxide in the atmosphere. The global annual mean concentration of carbon dioxide in the atmosphere has increased by more than 40% since 18th century.