Tsunamis
http://crisisreliefjapan. wordpress.com/2011/10/03/ the-man-who-stopped-the-tsunami/ |
How earthquakes cause tsunamisTsunamis occur when an earthquake causes the seafloor to rise and fall. This movement causes a rapid displacement of water; this then causes a wave which as it approaches the coastline its get higher as the seafloor gets shallower causing a tsunami.
How volcanoes cause tsunamisThere are two different ways that volcanoes cause seismic waves. One possibility is after a volcano occurs on land a large amount of ash and debris into the water causing a sudden change in displacement of water which transfers to kinetic energy which results in waves. Another way a volcano can cause a tsunami is by submarine volcano collapsing spewing lava and heating the surrounding water quickly.
How Landslides cause tsunamisLandslides are usually caused by earthquakes a tsunami then occurs when a large amount of soil or rocks fall into the ocean disrupting the sea.
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