TsunamiTsunamiBy Lowri and MatthewBy Lowri and Matthew

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How they happenHow they happen• Tsunamis are caused by an underwater Tsunamis are caused by an underwater

earthquake, a volcanic eruption, and a sub-earthquake, a volcanic eruption, and a sub-marine rockslide, or, more rarely, by and asteroid marine rockslide, or, more rarely, by and asteroid or meteoroid crashing into in the water from or meteoroid crashing into in the water from space.space.

• Most tsunamis are caused by underwater Most tsunamis are caused by underwater earthquakes, but not all underwater earthquakes earthquakes, but not all underwater earthquakes cause tsunamis - an earthquake has to be over cause tsunamis - an earthquake has to be over about magnitude 6.75 on the Richter scale for it about magnitude 6.75 on the Richter scale for it to cause a tsunami.to cause a tsunami.

• About 90 percent of all tsunamis occur in the About 90 percent of all tsunamis occur in the Pacific Ocean. Pacific Ocean.

damagedamage

• Tsunami can course so much Tsunami can course so much damage that it can nock down a damage that it can nock down a really tall building. And the risks of really tall building. And the risks of people lives. people lives.

Tsunami recordsTsunami records

Did you know tsunami are called Did you know tsunami are called tsunamis because TSU means harbour and tsunamis because TSU means harbour and NAMI means wave.NAMI means wave.

Information Information

• When an under sea earthquake or When an under sea earthquake or other major disturbance causes a other major disturbance causes a section of the ocean floor to section of the ocean floor to suddenly rise or sink, the mass of suddenly rise or sink, the mass of water above the affected area also water above the affected area also rises or sinks. this unexpected rises or sinks. this unexpected movement of the water creates a movement of the water creates a series of powerful waves.series of powerful waves.

• Luckily tsunamis will never hit Luckily tsunamis will never hit Swansea Swansea

Quiz Quiz

• Q1) Where was the latest tsunamiQ1) Where was the latest tsunamia)a) JapanJapan b)b) Oz Oz c)c) IndiaIndia

Q2) HOW MANY THINGS CAUSES A TSUNAMI.Q2) HOW MANY THINGS CAUSES A TSUNAMI.A)A) 100100b) b) 44 CC) 3) 3

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CREDITSCREDITS

• Directors Matthew Colborne Directors Matthew Colborne and Lowri Johnson and Lowri Johnson

• Editors Matthew Colborne Editors Matthew Colborne and Lowri Johnsonand Lowri Johnson

• A Special thanks to Microsoft A Special thanks to Microsoft and Google and Google

• And thanks to that guy that And thanks to that guy that made computers made computers

• GOOD BYE GOOD BYE

• THANKYOU THANKYOU