This PPT is based on one of the natural disasters TSUNAMI. Hope you all love it!!!

2. What is Tsunami
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 sea. Tsunamis
generally consist of a series of waves
with periods ranging from minutes to hours, arriving
in a so-called “wave train.” The impact of tsunamis is
limited to coastal areas, their destructive power can
be enormous and they can affect entire ocean basins.

3. Causes of Tsunami
• Underwater explosions (including detonations of
underwater nuclear devices), landslides, glacier
calving, meteorite impacts and other disturbances
above or below water all have the potential to
generate a tsunami.
• Most commonly tsunami is caused by underwater
earthquake or underwater volcanic activity

5. Effects of Tsunami
• Tsunami is massive loss of human life. They cause instant death. The
severe flooding that occurs as a result of a tsunami also damages
sewer systems, water supplies and soil. Stagnant and contaminated
water leads to malaria and other diseases, causing illness, infection
and death to spread rapidly. Soil becomes salinized from sea water
and debris, effecting long-term yields of crops. They also damage
property and permanently alter the landscape. They destroy
everything in their path, including buildings, trees, power lines,
bridges, cars, boats and more, leaving behind a mass of solid waste
and debris that is almost impossible to clean up. They also destroy
animal life and our natural resources. Hazardous materials and toxic
substances are also a concern, as asbestos, oil fuel and other
industrial raw materials and chemicals often leak as a result of
property damage.

7. Precautions during Tsunami
• Listen to a radio or television to get the latest emergency information, and
be ready to evacuate if asked to do so.
• If you hear an official tsunami warning or detect signs of a tsunami,
evacuate at once. Climb to higher ground. A tsunami warning is issued
when authorities are certain that a tsunami threat exists.
• Stay away from the beach.
• Never go down to the beach to watch a tsunami come in. If you can see the
wave you are too close to escape it.
• Return home only after authorities advise it is safe to do so. A tsunami is a
series of waves. Do not assume that one wave means that the danger over.
The next wave may be larger than the first one. Stay out of the area.

8. Precautions after Tsunami
• Stay tuned to a battery-operated radio for the latest
emergency information.
• Help injured or trapped persons.
• Give first aid where appropriate. Do not move seriously
injured persons unless they are in immediate danger of
further injury. Call for help.
• Remember to help your neighbors who may require special
assistance--infants, elderly people, and people with
disabilities.
• Enter your home with caution.

9. • Stay out of damaged buildings. Return home only when
authorities say it is safe.
• Use a flashlight when entering damaged buildings.
• Check for electrical shorts and live wires. Do not use appliances
or lights until an electrician has checked the electrical system.
• Open windows and doors to help dry the building.
• Shovel mud while it is still moist to give walls and floors an
opportunity to dry.
• Check food supplies and test drinking water.
• Fresh food that has come in contact with flood waters may be
contaminated and should be thrown out. Have tap water tested
by the local health department.