A tsunami is a series of giant waves usually caused by earthquakes or volcanic eruptions on the seafloor. When the wave nears the shore, it slows down and quickly increases in height to over 30 meters before crashing onto the coast. The 2004 Indian Ocean tsunami was caused by a 9.1 magnitude earthquake and resulted in over 280,000 deaths, 650,000 serious injuries, and 2 million people being made homeless across several countries in Southeast Asia and Africa. The devastating effects prompted responses including relief appeals and the establishment of early warning systems in the affected regions.

1. Odd one out?

3. Tsunami
• The crust shifting from an earthquake is a
primary effect.
• A tsunami is a specific secondary effect of an
earthquake.

5. What is a tsunami & how are they caused??
• A Tsunami is a giant _____ or series of waves usually
caused by an _________ or _____on the sea bed. As
the tsunami travels through _____ water the wave
may be less than ____ metre in height but it can
reach ______ of up to _____ mph. When the wave
nears the _____ it _____down and quickly increases
to a height of ____ meters or more before _______
onto the coast.
• crashing 15 slows land
deep speeds one wave 500
earthquake volcano

6. Causes, Effects and Responses to the
Indian Ocean Tsunami, 2004

7. • Indian Ocean Tsunami;
• Date:,………………………………………………..
• Magnitude:………………………………………
• Death Toll:………………………………………….
• Seriously Injured:…………………………….
• Homelessness: ……………………………………
26th Dec 2004
9.1
280,000
650,000
2 million

8. 1. Causes

11. Causes of the Indian Ocean Tsunami
• Watch this video from 4.20 to see what
caused this tsunami.

16. Mother runs towards Tsunami

17. Effects

18. Effects
• 280,000 died
• 2 million homeless
• Watch this video from 14.50
• Watch this video from 26.20 – effects on
Thailand

19. Responses
• Watch this appeal video
• Watch this video here – 1yr on
what the DEC did.
• Turn to p33
• Early warning system now in
place here

20. You’re the TV presenter!
• You are going to see a short clip of film just over a
minute long.
• You need to imagine you are the presenter and you
are going to write the script in your exercise books!
• Thankfully you have a co-presenter who you can
work with – they are in the desk next to you.
• Video (from 3.00 – 4.15)

21. Who is Tilly Smith?
• Tilly Smith in the news
• Wiki article on Tilly Smith
• Will you be the next Tilly Smith?