2. Causes Of Droughts
Drought has many causes. It can
be caused by not receiving rain or
snow over a period of time,
people can also play a big role in
drought. If we use too much water
during times of normal rainfall, we
might not have enough water
when a drought happens.
3. Causes Of Droughts
Weather that changes in the wind
patterns that move clouds and
moisture through the atmosphere
can cause a place to not receive
its normal amount of rain or snow
over a long period of time which
causes a drought.
4. Causes Of Droughts
We already know that a drought
occurs when not enough rain
falls to the ground. However,
water vapor condenses only if air
rises into the colder regions of
the atmosphere. If the air doesn’t
rise, then no rain will form. When
there is high air pressure, air falls
instead of rising. With the air
pressing down in a high pressure
zone, no currents of water vapor
are carried upward.
5. Causes Of Droughts
Low-pressure systems see more
cloudy, stormy weather.Usually,
however, we experience both
high- and low-pressure systems. It
is normal for a high-pressure
system to pass over an area and
move on, being replaced by a low-
pressure system. However, when
a high-pressure system is stalled,
the sunny weather can drag on for
days. If it keeps on going, the
result is a drought.
6. Causes Of Droughts
Or droughts occur because water
vapor is not brought by air
currents to the right areas at the
right times. Water that evaporates
from the oceans is brought inland
by wind to regions where it is
needed. However, sometimes
those winds are not strong
enough and the moisture falls in
other areas and that region
suffers from drought.
7. Effects of Droughts
Economic - Loss of national
economic growth, slowing down of
economic development
- Damage to crop quality, less
food production
- Increase in food prices
- Increased importation of food
(higher cost)
- Insect infestation
- Plant disease
- Loss from dairy and livestock
production
8. Effects of Droughts
Environmental
- Disease
- Increased predation.
- loss of wildlife in some areas
and too many in others
- Increased stress to endangered
species
- Damage to plant species
- Increased number and severity
of fires
- Wind and water erosion of soils
9. Effects of Droughts
Social - Food shortages
- Loss of human life from food
shortages, heat, suicides,
violence
- Mental and physical stress
- Water user conflicts
- Political conflicts
- Social unrest
- Public dissatisfaction with
government regarding drought
10. Effects of Droughts
- Public dissatisfaction with
government regarding drought
response
- Inequity in the distribution of
drought relief
- Loss of cultural sites
