Natural disasters connected with water can include tsunamis, storms, and floods. A tsunami is a series of waves caused by the displacement of a large volume of water, often triggered by earthquakes, volcanic eruptions, or landslides under the sea. Storms generally lead to severe weather like heavy rain, flooding, lightning, or strong winds that can damage property. A flood is an overflow of water that covers land not usually submerged, which can occur when a river, lake, or rainwater rises and spills outside of normal boundaries.

1. NATURAL DISASTERS
CONNECTED WITH WATER
by Group 4

3. Tsunami
• A tsunami, also known as a seismic sea wave or as a tidal wave, is a
series of waves in a body of water 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 (including detonations of underwater nuclear devices),
landslides, glacier calvings, meteorite impacts and other disturbances
above or below water all have the potential to generate a tsunami. In
being generated by the displacement of water, a tsunami contrasts
both with a normal ocean wave generated by wind and with tides,
which are generated by the gravitational pull of the Moon and the
Sun on bodies of water.

5. Storm
• A storm is any disturbed state of an environment or
astronomical body's atmosphere especially affecting its surface,
and strongly implying severe weather. Storms generally lead to
negative impacts on lives and property such as storm surge,
heavy rain or snow (causing flooding or road impassibility),
lightning, wildfires, and vertical wind shear; however, systems
with significant rainfall can alleviate drought in places they move
through.

6. Flood
• A flood is an overflow of water that submerges land which is usually
dry. The European Union (EU) Floods Directive defines a flood as a
covering by water of land not normally covered by water. In the sense
of "flowing water", the word may also be applied to the inflow of
the tide. Flooding may occur as an overflow of water from water
bodies, such as a river or lake, in which the water overtops or
breaks levees, resulting in some of that water escaping its usual
boundaries, or it may occur due to an accumulation of rainwater on
saturated ground in an areal flood. While the size of a lake or other
body of water will vary with seasonal changes in precipitation and
snow melt, these changes in size are unlikely to be considered
significant unless they flood property or drown domestic animals.