Air expands when heated and gets compressed when cooled. Cyclone Yaas churned closer to northeastern India on Tuesday as hundreds of thousands of residents in the COVID-weary country fled their homes to find safety. Tropical cyclones are also known as hurricanes. WELCOME 2. Cyclonic or frontal rainfall. A cyclone is a low-pressure area. Question 2(iv). After the condensation of water vapour, the release of moisture is known as precipitation. Answer: 2. Cyclonic rainfall, also known as frontal rain, is caused when two air masses of different temperatures meet. What Is Frontal and Non Frontal Precipitation? When warm maritime air mass, which is lighter, meets the cold maritime air, which is cold and heavier, the warm air mass undercuts the cold air mass. But, between 45° and 65° N and S of equator, the rainfall is first received on the western margins of the continents and it goes on decreasing towards the east. The temperature at which the water starts evaporating is referred to as: 3. The so-called "perfect storm" — also known as the Halloween Storm — hit New England about two months later. Answer: What are forms of condensation? (d) Humidity. On the other hand, Retreating monsoon is the condition when the high-pressure system replaces the low-pressure system developed over the northern plains. Condensation takes place when the dew point is lower than the freezing point as well as higher than the freezing point. Different places on the earth’s surface receive different amounts of rainfall in a year and that too in different seasons. Warm air and cool air don´t mix, as they have different densities. Because of the fog and mist, the visibility becomes poor to zero. The storms produce strong winds that push the water into shore, which can lead to flooding. 3. The temperature at which the water starts evaporating is referred to as the latent heat of vapourisation. Near the center, the pressure gradient force (from the pressure in the center of the cyclone compared to the pressure outside the cyclone) and the force from . However, the most favourable condition for condensation is the decrease in air temperature. The percentage of moisture present in the atmosphere as compared to its full capacity at a given temperature is known as the relative humidity. (b) The latent heat of vapourisation It is highest over oceans and lowest over continents. (c) Dust particle The, air on being heated, becomes light and rises up in convection . By what processes there a continuous exchange of water between the atmosphere, the oceans and the continents? Cyclonic rainfall: These rains take place in low pressure areas where air moves from low pressure area to high pressure are a and this movement brings rainfall. Question 2. What do we call to a situation where fog with smoke is found? As they also result in torrential rainfall, they produce major floods in affected areas along the coast. Fog and Mist: When the temperature of an air mass containing a large quantity of water vapour falls all of a sudden, condensation takes place within itself on fine dust particles. This results in variations in the atmospheric pressure. 2. This precipitation is caused due to the expansion of air near the . 400 to nearly 800 mm of rainfall will be possible over the next 5 days. (c) Low rainfall Hawaii, USA. The transformation of water vapour into water is called condensation. Found inside – Page 19Precipitation occurs as a result of water vapour laden air cooling to its dew point or below . ... The major processes that cool moist air masses are orographic lifting , convection , convergence and frontal lifting . Rainfall thus ... There are many forms of precipitation like dew, fog, rainfall, snowfall, hailstones etc. This creates drier conditions known as a rain shadow . In extreme condition, the winds may exceed 240 km per hour and gusts may surpass 320 km per hour. DISASTER MANAGEMENT (MCQ) The National Disaster Management Authority (NDMA) is headed by. The equatorial belt, the windward slopes of the mountains along the western coasts in the cool temperate zone and the coastal areas of the monsoon land receive heavy rainfall of over 200 cm per annum. How are rain patterns different near warm and cold fronts? As the air rises, it cools, condenses and forms rain. 64 to 119 knots (119 to 221 kmph) Super Cyclonic Storm. Zambia normally receives the bulk of its annual rainfall from November through out March as the ITCZ moves . (a) Saturation It is very common in the equatorial regions and interior parts of the continents, particularly in the northern hemisphere. As the warm air rises over the heavier cool air, it cools and creates a front; clouds form and produce rain. If it directly condenses into solid form, it is known as sublimation. Question 3. Found inside – Page 1609THE CYCLONIC DISTRIBUTION OF RAINFALL IN THE UNITED STATES , ETC. By WILLIAM GARDNER REED , University of California , Berkeley , Cal . ( Dated Nov. 1 , 1911. ) That the importance of rainfall as a climatic element normal is a longer or ... Convectional rainfall. When the saturated air mass comes across a mountain, it is forced to ascend and as it rises, it expands; the temperature falls, and the moisture is condensed. Rainfall is the amount of precipitation that falls as rain (water from clouds) on the Earth's surface, whether on land or on sea. There are two types of cyclones: middle latitude (mid-latitude) cyclones and tropical cyclones. Such rain is common in the summer or in the hotter part of the day. It is very common in the equatorial regions and interior parts of the continents, particularly in the northern hemisphere. The so-called "perfect storm" — also known as the Halloween Storm — hit New England about two months later. . After giving rain on the windward side, when these winds reach the other slope, they descend, and their temperature rises. These. Question 4. Found inside – Page 24Rainfall caused by intense evaporation in equatorial areas is called ______ (a) Orographic rainfall (b) Cyclonic rainfall (c) Frontal rainfall (d) Convectional rainfall Ans: (d) (SSC CGL Tier-I (CBE) Exam. 31.08.2016 (2nd Sitting)) Q85. Found inside – Page 89When Granite rocks get metamorphosed, they form (a) Quartzite (b) Gneiss (c) Marble (d) Slate Ans: (b) 27. Rainfall caused by intense evaporation in equatorial areas is called ______ (a) Orographic rainfall (b) Cyclonic rainfall (c) ... Widely scattered smaller drops are also called rain. Question 62. Frontal Precipitation. Answer: Conversion of water vapours into water is called: The so-called "perfect storm" — also known as the Halloween Storm — hit New England about two months later. Answer: Convectional rain: The air on being heated, becomes light and rises up in convection currents. The area situated on the leeward side, which gets less rainfall is known as the rain-shadow area. Found inside – Page 196With the exception of the well - known tropical cyclones of the seas , the distribution of pressure over the trade region is unfavorable to the development of a cyclonic circulation , and consequently cyclonic rainfall is seldom ... However, in Rajasthan, Gujrat, Haryana and Punjab, only 60 cm of rainfall is received. In atmosphere density of water vapour varies. An . Mists are frequent over mountains as the warm air rising up the slopes meets a cold surface. Highland Climates according to Koeppen’s Classification, Hurricane Ida: Mississippi River Reverses Flow, Fossil Fuel Production Halted, and Blackouts, Dogs are Able to Discern between Deliberate and Inadvertent Behavior, Seals and other Arctic Predators are Literally Running out of Food, Biofuels Provide an Efficient Approach to Reduce the Emissions of Shipping, Square to Launch a New Paid Subscription, Invoices Plus. (a) Saturation (ii) Absolute humidity and Relative humidity. Orographic or relief rainfall. tornado alley. The frontal rain fall is associated with cold and warm fronts. (б) 3000-5000 metres Cyclonic activity causes cyclonic rain and it occurs along the fronts of the cyclone. Question 7. The cold air pushes up the warm air and sky gets clear again. Found inside – Page 20Frontal Rainfall: It occurs due to upward movement of air caused by convergence of cold air masses against warm air ... air is caused to rise upward due to cyclonic circulation, the resulting precipitation is called cyclonic rainfall. . Answer: In urban and industrial centres smoke provides plenty of nuclei which help in the formation of fog and mist. Answer the following questions in about 150 words. Thunderstorms also accompany this type of rainfall. They are prevalent where warm currents of air come in contact with cold currents. There is a continuous exchange of water between the atmosphere, the oceans and the continents through the processes of evaporation, transpiration, condensation and precipitation. Fogs are drier than mist and they are prevalent where warm currents of air come in contact with cold currents. Warm air and cool air don´t mix, as they have different densities. The so-called "Perfect Storm" (also known as the Halloween Storm) struck New England about two months later. Question 9. Found inside – Page 89When Granite rocks get metamorphosed, they form (a) Quartzite (b) Gneiss (c) Marble (d) Slate Ans: (b) 27. Rainfall caused by intense evaporation in equatorial areas is called ______ (a) Orographic rainfall (b) Cyclonic rainfall (c) ... As it rises, it expands and loses heat and consequently, condensation takes place and cumulous clouds are formed. Question 2. Answer: 3. (c) 6000-9000 metres (b) Smog, Question 5. A storm surge is a rise in sea level that occurs during tropical cyclones, intense storms also known as typhoon s or hurricanes. Dew: When the moisture is deposited in the form of water droplets on cooler surfaces of solid objects (rather than nuclei in air above the surface) such as stones, grass blades and plant leaves, it is known as dew. Found inside – Page 20Frontal Rainfall: It occurs due to upward movement of air caused by convergence of cold air masses against warm air ... air is caused to rise upward due to cyclonic circulation, the resulting precipitation is called cyclonic rainfall. Found inside – Page 77Orographic rainfall 3. Convergence or Cyclonic Rainfall When the air currents converge and rise, the convergence rainfall occurs. ... Such rainfall associated D with thunder and lightning is also called as the frontal rainfall. The transformation of water vapour into water is called condensation. (c) Evaporation Answer: Found inside – Page 89When Granite rocks get metamorphosed, they form (a) Quartzite (b) Gneiss (c) Marble (d) Slate Ans: (b) 27. Rainfall caused by intense evaporation in equatorial areas is called ______ (a) Orographic rainfall (b) Cyclonic rainfall (c) ... Use a diagram to explain the process of evaporation. The rainfall is more over the oceans than on the landmasses of the world. (a) Water vapour, Question 1(ii). Found inside – Page 44This is called convectional rainfall . It is experienced every day in the equatorial region . Orographic rainfall When a mountain or a hill comes in the path of moisture - laden winds , the moist air mass is forced to ascend along its ... This type of rain usually is due to the occurrence of cyclonic activities and is witnessed along fronts. Which one of the following is the highest cloud in the sky? Condensation is caused by the loss of heat. Read more about the tropical cyclone, how is it formed, and its effects. Found inside – Page G-44It is also known as a less extensive thunderstorm as it is marked with the occurrence of irregular in shape . ... A form of North America , and South America . precipitation called graupel ( c ) Cyclonic precipitation The precipitation ... Question 2. Differentiate between Distribution of Rainfall. (c) Dew Point (b) Transpiration Such a condition when fog is mixed with smoke, is described as smog. Cyclonic precipitation is two types: frontal and non-frontal precipitation. (b) 5-10% (a) Fog Cyclonic rainfall, also known as frontal rain, is caused when two air masses of different temperatures meet. Rain is the precipitation of water in liquid form. Droplets with more than 0.5 mm diameter are, generally, considered as rain. Cyclonic or Frontal Rainfall: It is the last type of rainfall and occurs when two air masses that have different characteristics combine together. Then, the excess water vapour condenses into liquid form. (a) 0-4%, Question 10. Cyclonic / Frontal Rainfall Frontal rainfall occurs due to the upward movement of the air caused by the convergence of different air masses with different temperatures. Heat is the main cause for evaporation. What is absolute humidity? It is also known as what? (a) Dew point East coastal regions receive 100 to 200 cms of rainfall. 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