Download - Drought
Direction for Computer Assisted lesson
Follow the Instruction given below:This lesson is about the topic-Drought.This capsule contain suitable slides related to the concept. Necessary Pictures are provided in each slide. Use mouse (single click) to move to the next slide. Click on the textbox to get the response.Please note the direction given by the computer.Brain Teasers are provided for developing conceptsBrain relaxers are provided for self checking with necessary explanation.After completing the lesson the learners can recapitulate the lesson
through Test Your knowledge session.
Several thousand people die each year worldwide from heat stress.
Most deaths in North America occur in inner cities in the southeastern US.
Severe urban pollution may be a contributing factor.
Heat stress
Heat waves, drought, dust
Picture of Drought Are HereLook at the figures how these Droughts are effecting the humans ,animals as well the plants
1 2
What is Drought ?
Drought is when an area gets less than its normal amount of rain over months or even year . crops and other plants need water to grow , and land animals need it to live.
There are many definitions , but usually it is a period of time where there is much less than average rainfall.
Brain Teaser 2.1 Is Drought is negatively affecting living things?
Yes No
Refer Brain Relaxer 2.1 Click here
Drought affects our lives in many different ways because water is such an important part of so many of our activities. We need water to live , and animals , and plants do too.
Redused the rainfall result in drought Occures because water vapour not brought by air currents to right areas
at right times. Unusual currents of cold and warm water in oceans creates high pressure
. EI Nino causes drought inAsia. Mountain prevent wind from moisture to needy region.
causes of drought
PROLONGED LACK OF PRECIPITATION
LOSS OF VEGETATION
INSECT INFESTATION
LOSS OF USE OF AG. LAND
LOSS OF SOIL MOSTURE
DEPLETION/POLLUTION OF GROUND WATER
LOSS OF CROPS
CAUSES & CONSE-
QUENCES
DROUGHTS
DISASTER LABORATORIES
Here are some pictures drought are given. Observe the picture carefullu.
Fig.2
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456
1
A Slow-Onset, Natural Phenomenon That Can
Happen Anywhere
UNDERSTANDING DROUGHT
DROUGHT
Droughtis an environmental extreme that is
characterized by an absence of precipitation in
the local and regional water cycle as a consequence of
interactions of elements of the atmosphere, hydrosphere, and
lithosphere.
D5
Brain Teaser 2.2Are you think Drought only affect the plants, animals , humans ?...
Yes No
Refer Brain Relaxer 2.2
Click here
Drought– A Natural Phenomenon That Can Cause Disasters
Planet Earth’s atmospheric-
oceanic-lithospheric
interactions cause:
Droughts
CHARACTERISTICS OF DROUGHT
SLOW ONSETDIVERSE IN LOCATION
AND DURATIONDIFFICULT TO
MEASURE THE DURATION AND THE
EXTENT OF THE SOCIETAL IMPACTS
D6
CONCEPT FORMATION
C2 A drought is a period of below-average precipitation of in a given region, resulting in prolonged shortages in its water supply, whether atmosphereic, surface or ground water.
UNIT 2
THINKING SESSION
DROUGHT HAZARDS
Brain Relaxer 2.1
Read to the newsINDIAN EXPRESS 2010-2011Thiruvananthapuram: The china drought was a drought the began in late 2010 and impacted eight provinces in the northern part of the People’s Republic of China (PRC). It was the worst drought to hit the country in 60 years, and it affected most of wheat producing regions in the PRC
From the above news it is clear that drought
affected the living beings and as well
the plans also
Brain Relaxer 2.2
HIGH TEMPERATURES VERY LOW HUMIDITY LOSS OF SOIL MOISTURE VANISHING STREAMS, LAKES, AND
WATER TABLES
DROUGHT HAZARDS (AKA Potential disaster Agents)
• Drought is linked to loss of water quantity and quality, which can lead to major loss of life (people and livestock), loss of livelihoods, loss of habitats, and sometimes famine.
DROUGHT LINKAGES AND RISKS
Between 108 BC and 1911 AD, 1,828 famines of varying severity occurred in China (i.e., one nearly every year in at least one province
NOTE:
Millions in China have died from lack of food
NOTE
Test your knowledge
I Say True or False Drought is linked to loss of water quantity and quality
2. A desaster may be domestic or international
3. Give two important drought hazards ? …………………………………………………………………………. …Answer……………………………………………………………………….
True False
True False