Chapter 2 THE TSUNAMI INTRODUCTION: A tsunami also known as a seismic sea wave, 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
"Chapter 2 THE TSUNAMI INTRODUCTION: A tsunami also" is the property of its rightful owner. Permission is granted to
download and print the materials on this website for personal, non-commercial use only, and to display it
on your personal computer provided you do not modify the materials and that you retain all copyright
notices contained in the materials. By downloading content from our website, you accept the terms of this
agreement.
Presentation Transcript
01
Chapter 2 THE TSUNAMI<br>
02
INTRODUCTION: A tsunami also known as a seismic sea wave, 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 (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 Unlike normal ocean waves which are generated by wind or tides which are generated by the gravitational pull of the Moon and Sun, a tsunami is generated by the displacement of water.<br>
03
Objectives To develop the understanding of natural disasters like tsunami
To enable the students identify the reason a tsunami occurs and its affects
To enable the students to react in natural disasters like tsunami.
To enable the students answer the questions appropriately.<br>
04
Textual Points Sanjeev was a life-guard serving in the Katchall island of the Nicobar group of islands.
Meghna was brought to the shore by a wave.
Almas Javed had gone with her family to celebrate Eid in Nancowry Island.
The tsunami waves were triggered by a massive earthquake off Northern Sumatra.<br>
05
Textual Points contd. The hotel building in which Tilly was staying withstood the surge of four tsunami waves.
Tilly's geography lesson saved many lives.
Many animal carcasses were found on the Patanangala beach inside the Yala National Park in Srilanka.
Animals can sense an approaching disaster long before humans realise what's going on.<br>
06
NEW WORDS Archipelago-a group of many islands and the surrounding sea
Tremor- the earth’s shakes during an earthquake
Chaos- complete disorder or confusion
Recede- move back from where it was
Traumatised- greatly shocked and distressed<br>
07
New words contd. Resort- a place where people go to enjoy holiday
Refuge-shelter or protection from daanger
Withstood- endured without collapsing
Surge- force; momentum
Swelling- increasing (in our context)
Forewarned- prior information of a possible future danger or problem<br>
