This document discusses several types of natural disasters: - Avalanches are rapid flows of snow down slopes that can kill over 150 people worldwide each year, mostly skiers and snowboarders. - Earthquakes result from the sudden release of energy in the Earth's crust and can range from undetectable to violent enough to propel objects into the air. - Floods occur when bodies of water overflow their normal boundaries onto normally dry land, posing risks to agriculture, infrastructure, and health. - Hurricanes are powerful tropical storms that form over warm ocean waters and bring strong winds, heavy rain, and flooding.

1. Powers of nature
Natural Disasters

3. An Avalanche is a rapid
flow of snow down a
slope, from either
natural triggers or
human activities.
It is typical occurring in
mountains terrain, an
avalanche can mix air
and water with the
descending snow
Avalanches kill more than 150
people worldwide each year. Most
are snowmobilers, skiers and
snowboards.

4. An earthquake is also known
as a quake, tremor or temblor
is the shaking of the surface of
the Earth resulting from a
sudden release of energy in
the Earth’s lithosphere that
creates seismic waves.
Earthquakes can range in size
from those that are so weak
that they cannot be felt to
those violent enough to propel
objects and people into the air,
and wreak destruction across
entire cities.
 The seismicity, or seismic activity, of
an area is the frequency, type, and
size of earthquakes experienced over
a period of time. The word tremor is
also used for non-earthquake seismic
rumbling

5. A flood is an overflow of water
that submerges land that is
usually dry. In the sense of
"flowing water", the word may
also be applied to the inflow of
the tide.
A flood is an overflow of water
that submerges land that is
usually dry. In the sense of
"flowing water", the word may
also be applied to the inflow of
the tide. Floods are an area of
study of the discipline hydrology
and are of significant concern in
agriculture, civil engineering and
public health.
Floods are an area of study of the discipline
hydrology and are of significant concern in
agriculture, civil engineering and public
health.

6.  Since hurricanes need a few different
factors to form, they can only form in
certain areas of the world.
 Hurricanes are tropical cyclones that
form over the Atlantic Ocean or
eastern Pacific Ocean. They typically
form in tropical waters just north of
or south of the equator, where
waters are warm.
 In the Atlantic hurricane basin, these
storms typically start with a
disturbance off the West coast of
Africa. Also referred to as the North
Atlantic basin, this region includes
the North Atlantic Ocean, the
Caribbean Sea, and the Gulf of
Mexico.
 A hurricane is a type of
storm called a tropical
cyclone, which forms
over tropical or
subtropical waters.

7. A volcano is an opening in the
earth’s crust through which lava,
volcanic ash, and gases escape.
A volcano is a rupture in the
crust of a planetary-mass object,
such as Earth, that allows hot
lava, volcanic ash, and gases to
escape from a magma chamber
below the surface. On Earth,
volcanoes are most often found
where tectonic plates are
diverging or converging, and most
are found underwater.
Volcanic eruptions are partly driven
by pressure from dissolved gas,
much as escaping gases force the
cork out of a bottle of champagne.

8. * A tornado is a violently rotating
column of air that is in contact with
both the surface of the Earth and
a cumulonimbus cloud or, in rare
cases, the base of a cumulus cloud.
* Most tornadoes have wind speeds
less than 110 miles per hour
(180 km/h), are about 250 feet
(80 m) across, and travel a few
miles (several kilometers) before
dissipating. The most
extreme tornadoes can attain wind
speeds of more than 300 miles per
hour (480 km/h), are more than two
miles (3 km) in diameter, and stay
on the ground for dozens of miles
(more than 100 km).
* Tornadoes come in many shapes and
sizes, and they are often visible in
the form of a condensation
funnel originating from the base of a
cumulonimbus cloud, with a cloud of
rotating debris and dust beneath it.

9. Tsunamis are giant waves caused by
earthquakes or volcanic eruptions under
the sea. Out in the depths of the ocean,
tsunami waves do not dramatically
increase in height. But as the waves travel
inland, they build up to higher and higher
heights as the depth of the ocean
decreases.
A tsunami is a series of waves in a water
body caused by the displacement of a
large volume of water, generally in an
ocean or a large lake. Earthquakes,
volcanic eruptions and other underwater
explosions above or below water all have
the potential to generate a tsunami.
The speed of tsunami waves
depends on ocean depth rather than
the distance from the source of the
wave. Tsunami waves may travel as
fast as jet planes over deep waters,
only slowing down when reaching
shallow waters.

10. A wildfire, bushfire, wild land
fire or rural fire is an unplanned,
unwanted, uncontrolled fire in an area
of combustible vegetation starting
in rural areas and urban
areas. Depending on the type of
vegetation present.
Wildfire, also called forest, bush or
vegetation fire, can be described as
any uncontrolled and non-prescribed
combustion or burning of plants in a
natural setting such as a forest,
grassland, brush land or tundra, which
consumes the natural fuels and
spreads based on environmental
conditions
a wildfire can also be classified
more specifically as a forest fire,
brush fire, bushfire , desert fire,
grass fire, hill fire, peat fire, prairie
fire, vegetation fire, or veld fire.

11. Thank You
- Kaival Shah