This document summarizes several types of natural disasters and weather phenomena including avalanches, cyclones, earthquakes, dust storms, snow storms, blizzards, volcanoes, forest fires, tsunamis, typhoons, clouds, emergencies, and wildfires. It provides brief definitions and descriptions of each phenomenon.

2. NATURE NATURAL DISASTERS
 Nature, in the broadest
sense, is equivalent to
the natural, physical,
or material
world or universe.
"Nature" refers to
the phenomena of the
physical world, and also
to life in general. It ranges
in scale from
the subatomic to
the cosmic.
 A natural disaster is a
major adverse
event resulting
from natural
processes of the Earth;
examples
include floods, volcanic
eruptions, earthquakes,
tsunamis, and other
geologic processes.

3.  An avalanche is a rapid flow
of snow down a slope. Avalanches
are typically triggered in a starting
zone from a mechanical failure in
the snowpack (slab avalanche) when
the forces on the snow exceed its
strength but sometimes only with
gradually widening (loose snow
avalanche).

5.  A cyclone is an area of closed, circular fluid
motion rotating in the same direction as
the Earth. This is usually characterized by
inward spiraling winds that rotate anti-
clockwise on the Northern
Hemisphere and clockwise in the Southern
Hemisphere of the Earth. Most large-scale
cyclonic circulations are centered on areas
of low atmospheric pressure. The largest low-
pressure systems are cold-core polar cyclones
and extra tropical cyclones which lie on
the synoptic scale.

7.  An earthquake is the result of a sudden release of
energy in the Earth's crust that creates seismic waves.
The seismicity or seismic activity of an area refers to
the frequency, type and size of earthquakes
experienced over a period of time.
 Earthquakes are measured using observations
from seismometers.The moment magnitude is the
most common scale on which earthquakes larger than
approximately 5 are reported for the entire globe.The
more numerous earthquakes smaller than magnitude
5 reported by national seismological observatories are
measured mostly on the local magnitude scale, also
referred to as the Richter scale

9. SAND STORM
 A dust storm or sand storm is
a meteorological phenomenon common
in arid and semi-arid regions. Dust storms
arise when a gust front or other strong wind
blows loose sand and dirt from a dry surface.
Particles are transported by saltation and
suspension, a process that moves soil from
one place and deposits it in another.
The Sahara and drylands around the Arabian
peninsula are the main terrestrial sources of
airborne dust.

11. SNOW STORM
 Snowstorm (also known as winter storm) is an event in
which the varieties of precipitation are formed that
only occur at low temperatures, such as snow or sleet,
or a rainstorm where ground temperatures are low
enough to allow ice to form (i.e. freezing rain). In
temperate continental climates, these storms are not
necessarily restricted to the winter season, but may
occur in the late autumn and early spring as well. Very
rarely, they may form in summer.

13. BLIZZARDS
 A blizzard is a severe snowstorm
characterized by strong sustained
winds of at least 56 km/h (35 mph)
and lasting for a prolonged period of
time — typically three hours or more.
A severe blizzard has winds over
72 km/h (45 mph), near zero visibility,
and temperatures of −12 °C (10 °F) or
lower.

15. volcano
 A volcano is an opening,
or rupture, in the surface or crust of
the Earth or a planetary mass
object, which allows
hot lava, volcanic ash and gases to
escape from the magma
chamber below the surface.
 On Earth, volcanoes are generally
found where tectonic

17. FOREST FIRE
 A wildfire is an uncontrolled fire in an
area of combustible vegetation that
occurs in the countryside or
a wilderness area.Other names such
as brush fire, bushfire, forest
fire, desert fire, grass fire, hill
fire, peat fire, vegetation fire,
and veldfire may be used to describe
the same phenomenon depending on
the type of vegetation being burned.

19.  Because of seismic and volcanic activity
at tectonic plate boundaries along the Pacific
Ring of Fire, tsunamis occur most frequently
in the Pacific Ocean, but are
worldwide natural phenomena.They are
possible wherever large bodies of water are
found, including inland lakes, where they can
be caused by landslides and glacier calving.

21. TYPHOON
• A typhoon is a mature tropical cyclone that
develops in the northwestern part of the Pacific
Ocean between 180° and 100°E. This region is
referred to as the northwest Pacific basin.[1] For
organizational purposes, the northern Pacific
Ocean is divided into three regions: the eastern
(North America to 140°W), central (140°W to
180°), and western (180° to 100°E).

23. CLOUDY
• The state of
the weather when the
clouds are conspicuously
present, but do not
completely dull the sky or
the day at any moment.

25. EMERGENCY
•An emergency is a situation that poses
an immediate
risk to health, life, property,
or environment. Most emergencies
require urgent intervention to prevent a
worsening of the situation.

27. WILD
•Growing, or living in a natural state,
without human help, not domesticated,
cultivated, or tamed.

29. YEAH! ITS MOVIE TIME (: 0
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30. THANKS! (: DONE BY
SRAJAN.