The document summarizes different components of weather including clouds, wind, rain, temperature, and thunderstorms. Clouds are formed from tiny water or ice droplets that float in the air and appear white when they reflect sunlight. Wind is moving air produced by uneven heating of the Earth's surface. Rain forms as warm air holding water vapor rises and cools, causing water droplets to collect into clouds that become heavy and fall as rain. Temperature measures hotness and coldness on scales like Fahrenheit and Celsius. A thunderstorm is a storm with lightning and thunder within a cloud and can include heavy rain and hail.
Impacts of Heat,Cold Waves, Stroms And Tropical CyclonesMohan Kumar
This document summarizes different extreme weather events that impact India such as cold waves, heat waves, frost, cyclones, storms, and more. It provides details on what causes each event, where they typically occur in India, and examples of impacts like crop damage, infrastructure damage, loss of life, and effects on the environment. Specific events highlighted include a 2003 cold wave that impacted northern India and caused major crop losses, as well as cyclones Vardah and recent heat waves that have contributed to India experiencing one of the hottest years on record in 2017.
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A “drought” is an extended period of deficient rainfall relative to the statistical multi-year average for a region. But because of the various ways it is measured, an objective drought definition has yet to be produced upon which everyone can agree.
The four types are: meteorological (lack of precipitation), agricultural, (lack of moisture in the soil where crops grow), hydrological (low levels of water in lakes and reservoirs), and socioeconomic (water shortages in drinking and running water).
Only .003% of water on Earth is freshwater available for human consumption. Save water by challenging friends to only use 13 gallons of water in a day. (It’s harder than it sounds!) Sign up for 13 Gallon Challenge.
Meteorologists predict drought based on precipitation patterns, stream flow, and moisture of soil over long periods of time.
In the United States, droughts are most likely to occur in the Midwest and the South.
Hurricanes, tropical storms, typhoons, and cyclones are all terms that describe a closed circulation system in the atmosphere consisting of strong winds and low pressure that rotate clockwise in the southern hemisphere and counter-clockwise in the northern hemisphere. Earthquakes are the result of a sudden break within the upper crust of the Earth that may also break the surface and cause the ground to vibrate. Tsunamis, usually caused by earthquakes, underwater explosions, landslides or volcanic eruptions under the ocean floor, are one of the deadliest natural disasters and can affect millions of people with waves that get bigger as they approach the coast. Floods occur when a body of water exceeds its capacity and overflows its channel or boundaries
Drought is caused by drier than normal conditions that can lead to water supply problems. The 2013 drought in Maharashtra, India was one of the worst in 40 years after low rainfall. Drought is caused by factors like high temperatures, low soil moisture, demand exceeding supply, and changes in weather patterns. Effects of drought include hunger, lack of drinking water, disease, impacts on wildlife, migration, social conflicts, and war. Precautions to prevent drought include conserving water usage and collecting excess water.
This document discusses natural disasters that commonly occur in Bangladesh. It notes that Bangladesh is highly vulnerable to natural disasters like floods, cyclones, landslides, droughts, and earthquakes due to its geography and climate. Major floods have occurred in 1954, 1987, 1988, 1998 and caused loss of life and property. Cyclones in 1991 and 2007 also killed over 100,000 people. Landslides in Chittagong in 2007 killed over 120 people. Earthquakes are another hazard, with one in 1997 causing damage. Droughts regularly affect parts of Bangladesh and have humanitarian impacts. The document outlines damage from various natural disasters and calls for mitigation efforts.
The document summarizes different components of weather including clouds, wind, rain, temperature, and thunderstorms. Clouds are formed from tiny water or ice droplets that float in the air and appear white when they reflect sunlight. Wind is moving air produced by uneven heating of the Earth's surface. Rain forms as warm air holding water vapor rises and cools, causing water droplets to collect into clouds that become heavy and fall as rain. Temperature measures hotness and coldness on scales like Fahrenheit and Celsius. A thunderstorm is a storm with lightning and thunder within a cloud and can include heavy rain and hail.
Impacts of Heat,Cold Waves, Stroms And Tropical CyclonesMohan Kumar
This document summarizes different extreme weather events that impact India such as cold waves, heat waves, frost, cyclones, storms, and more. It provides details on what causes each event, where they typically occur in India, and examples of impacts like crop damage, infrastructure damage, loss of life, and effects on the environment. Specific events highlighted include a 2003 cold wave that impacted northern India and caused major crop losses, as well as cyclones Vardah and recent heat waves that have contributed to India experiencing one of the hottest years on record in 2017.
.
A “drought” is an extended period of deficient rainfall relative to the statistical multi-year average for a region. But because of the various ways it is measured, an objective drought definition has yet to be produced upon which everyone can agree.
The four types are: meteorological (lack of precipitation), agricultural, (lack of moisture in the soil where crops grow), hydrological (low levels of water in lakes and reservoirs), and socioeconomic (water shortages in drinking and running water).
Only .003% of water on Earth is freshwater available for human consumption. Save water by challenging friends to only use 13 gallons of water in a day. (It’s harder than it sounds!) Sign up for 13 Gallon Challenge.
Meteorologists predict drought based on precipitation patterns, stream flow, and moisture of soil over long periods of time.
In the United States, droughts are most likely to occur in the Midwest and the South.
Hurricanes, tropical storms, typhoons, and cyclones are all terms that describe a closed circulation system in the atmosphere consisting of strong winds and low pressure that rotate clockwise in the southern hemisphere and counter-clockwise in the northern hemisphere. Earthquakes are the result of a sudden break within the upper crust of the Earth that may also break the surface and cause the ground to vibrate. Tsunamis, usually caused by earthquakes, underwater explosions, landslides or volcanic eruptions under the ocean floor, are one of the deadliest natural disasters and can affect millions of people with waves that get bigger as they approach the coast. Floods occur when a body of water exceeds its capacity and overflows its channel or boundaries
Drought is caused by drier than normal conditions that can lead to water supply problems. The 2013 drought in Maharashtra, India was one of the worst in 40 years after low rainfall. Drought is caused by factors like high temperatures, low soil moisture, demand exceeding supply, and changes in weather patterns. Effects of drought include hunger, lack of drinking water, disease, impacts on wildlife, migration, social conflicts, and war. Precautions to prevent drought include conserving water usage and collecting excess water.
This document discusses natural disasters that commonly occur in Bangladesh. It notes that Bangladesh is highly vulnerable to natural disasters like floods, cyclones, landslides, droughts, and earthquakes due to its geography and climate. Major floods have occurred in 1954, 1987, 1988, 1998 and caused loss of life and property. Cyclones in 1991 and 2007 also killed over 100,000 people. Landslides in Chittagong in 2007 killed over 120 people. Earthquakes are another hazard, with one in 1997 causing damage. Droughts regularly affect parts of Bangladesh and have humanitarian impacts. The document outlines damage from various natural disasters and calls for mitigation efforts.
Earth Day is an annual event celebrated worldwide on April 22nd to support environmental protection. It was first celebrated in 1970 and is now coordinated globally in over 193 countries. On Earth Day 2016, the landmark Paris Agreement on climate change was scheduled to be signed by the US, China, and over 120 other countries. The signing would fulfill requirements for the agreement to take effect. Earth Day was founded by US Senator Gaylord Nelson as an environmental teach-in on April 22, 1970, and now involves events in over 141 nations coordinated by the Earth Day Network to raise awareness of environmental issues.
Earth Day is an annual event celebrated worldwide on April 22nd to support environmental protection. It was first celebrated in 1970 and is now coordinated globally in over 193 countries. On Earth Day 2016, the landmark Paris Agreement on climate change was scheduled to be signed by the US, China, and over 120 other countries. The signing would fulfill requirements for the agreement to take effect. Earth Day was founded by US Senator Gaylord Nelson as an environmental teach-in on April 22, 1970, and now involves events in over 141 nations coordinated by the Earth Day Network to raise awareness of environmental issues.
1. Ջրհեղեղներ
Այլ տարերային աղետների մեջ ավելի հաճախ դիտվում
են ջրհեղեղները։ Ջրհեղեղները բնության ուժերի
գործողության հետեւանքով ցամաքի զգալի մասի
ժամանակավոր ջրածածկումներ են։
Ջրհեղեղները տարերային աղետների մյուս
տեսակներից տարբերվում են այն բանով, որ որոշ
չափով կանխատեսելի են։
Դա հնարավորություն է տալիս շատ դեպքերում
վաղօրոք որոշել ջրհեղեղի ժամը, բնույթը եւ
մասշտաբները։
2. Ջրհեղեղի հիմնական պատճառներն են՝
տեղատարափ, երկարատեւ
անձրեւները, ձնհալը, պատվարների ու
ամբարտակների ճեղքվածքները,
փլուզումները, սողանքները, այլ
բնական երեւույթները։
3. Ջրհեղեղը վնասում է արդյունաμերական եւ
գյուղատնտեսական օբյեկտները, աճեցրած
բերքով դաշտերը, քայքայում է շենքերը,
հիդրոտեխնիկական կառույցներն
ու հաղորդակցուղիները, փչացնում
ձեռնարկությունների սարքավորումները։
Սովորաբար միջին եւ խոշոր ջրհեղեղների
առաջին ժամերին խախտվում է
հաղորդակցությունը բնակավայրերում ու
նրանց միջեւ։
4. Էլեկտրամատակարարումն ու կապը, որպես կանոն,
առաջին ժամվա ընթացքում շարքից դուրս են գալիս։
Ջրամբարներում ջրի գերլցման եւ երկարատեւ
ներգործության հետեւանքով պատվարների ու
ամբարտակների վրա կարող են առաջանալ
ճեղքվածքներ ու թողանցքեր, ինչը սպառնում է
աղետալի ջրածածակման գոտու ստեղծման։
Խոշոր ու աղետալի ջրհեղեղների դեպքում ջրի
հոսանքներն արմատախիլ են անում ծառեր, քշում
քարե պատնեշներ, ոչ մեծ տներ, շրջում
տրանսպորտային միջոցներ։
5. Ջրհեղեղները վտանգավոր են նաեւ այն
բանով, որ շենքերն ու կառույցները
կորցնում են իրենց ամրությունը։
Փայտյա շինությունները սկսում են
փտել, մետաղական կառույցները
ժանգոտում են։
