Transcript Earthquakes An Earthquake is a sudden shake of the Earth's

Earthquakes
An Earthquake is a sudden shake of the Earth's crust.The
vibrations may vary in magnitude. The earthquake has point of
origin underground called the "focus". The point directly above the
focus on the surface is called the"epicentre".Earthquakes by
themselves rarely kill people or wildlife.
Floods
Floods
Floods
Floods are among the most frequent and costly
natural disasters. Conditions that cause floods
include heavy or steady rain for several hours or
days that saturates the ground. Flash floods occur
suddenly due to rapidly rising water along a
stream or lowlying area.
Tornadoes
Some of the most violent tornadoes develop from supercell
thunderstorms. A supercell thunderstorm is a long-lived
thunderstorm possessing within its structure a continuously rotating
updraft of air.A supercell thunderstorm is a long-lived thunderstorm
possessing within its structure a continuously rotating updraft of
air.These storms have the greatest tendency to produce tornadoes,
some of the huge wedge shape. Generally weaker than a supercell
tornado. It often forms along the leading edge of
rain-cooled downdraft air emanating
from a thunderstorm, known as a
“gust front.” Weak and usually
short-lived, a gustnado forms along
the gust front of a thunderstorm,
appearing as a temporary dust whirl
or debris cloud.
Fire
Wildfires are an uncontrolled fire burning in wildland areas.
Common causes include lightning and Wildfiresrought but wildfires
may also be started by human negligence or arson.
Health and diseases
An epidemic is an outbreak of a contractible
disease that spreads at a rapid rate through
a human population. A pandemic is an
epidemic whose spread is global.