This prevents the entry of heat to the earth’s surface.Clouds reflect a large amount of radiation from the sun.After the cyclone, the devastation continues.Ĭloudy days are warmer than cloudless days.The destruction depends mainly on its intensity, its size, and its location,.Due to heavy rain, strong wind & large storm.Because they are formed due to the differential heating of land and sea.Cyclones are centres of low pressure where, winds from the surrounding high pressure area converge towards the centre in a spiral form.Ĭyclones cause huge loss of life and property.Is the energy which makes objects hot, while temperature measures the intensity of heat.When these ice crystals collide and stick together, it becomes snowflakes.It is the precipitation of opaque and semi-opaque ice crystals.Snow is formed when condensation occurs below the freezing point.This precipitation is a mixture of snow and rain.Sleet refers to precipitation in the form of pellets made up of transparent and translucent ice.The diameter of a raindrop is more than 5 mm. It occurs only when there is abundant moisture in the air.Rain is the most widespread and important form of precipitation in places having temperatures above the freezing point.Sometimes drizzles are combined with fog and hence reduce visibility.Falling of numerous uniform minute droplets of water with a diameter of less than 0.5 is called a drizzle mm from low clouds.The main forms of precipitation are Drizzle, rain, sleet, snow, hail, etc.Falling down of condensed water vapour in different forms is called Precipitation.What is Precipitation? What are the different types of precipitation? What are the different types of rainfall?īased on the mechanisms of raising the air, there are three types of rainfall. A visible mass of condensed water vapour floating in the air above the ground level is called a cloud.Sometimes mixing of warmer and cooler air also produces clouds.Cool moisture-laden air gets collected around particles like dust, salt content from the sea, smoke etc and forms clouds.The velocity of westerlies become so vigourous and fast to be called Roaring forties at 40°.They blow from South West to North East in the Northern hemisphere and North West to South East in the Southern hemisphere.They blow with great regularity, force and in a constant direction throughout the year.Trade winds blow from the subtropical high-pressure belt to the Equatorial low-pressure belt in both the hemispheres.These winds include Trade winds, Westerlies, and Polar Easterlies.They are also called as permanent winds or the prevailing winds.The winds which constantly blow in the same direction throughout the year are called the Planetary winds.Mention the planetary wind system of the earth. Temperature varies from place to place, season to season, and continent to continent.Isotherms are imaginary lines drawn on maps, connecting points that have equal temperatures.What are the processes responsible for heating the atmosphere? Lapse rate arises from the word lapse, in the sense of a gradual change. The lapse rate is the rate at which Earth’s atmospheric temperature decreases with an increase in altitude, or increases with the decrease in altitude. Mention the factors that affect the climate. The atmosphere is thick near the earth’s surface and thins out until it eventually merges with space.
The blanket of air that surrounds the Earth is called the atmosphere. _ is called the eye of the storm/ cyclone. ĭew in the form of ice crystals is called _ The _ is the chief energy source of the Earth.Īll types of clouds are found in the _. The process of change of state of water from gaseous to liquid state is called _ The average global surface temperature is. _ is the most important gas for the survival of living organisms.
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