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Geoscience Australia: what is a Tsunami?
Tsunami (pron: 'soo-nar-me') is a Japanese word: 'tsu' meaning harbour and 'nami' meaning wave. Tsunami are waves caused by sudden movement of the ocean surface due to earthquakes, landslides on the sea floor, land slumping into the ocean, large volcanic eruptions or meteorite impact in the ocean.
Volcanoes: How often do they erupt and what happens when they do?
Planet Earth is covered in hundreds of volcanoes, many of which will be erupting at any one time.
Many of us only notice volcanoes when they are about to explode or disrupt our travel plans, but these spectacular forces of nature can have a significant impact on people living in the local area.
The Science of Earthquakes explained
Earthquakes can cause immense damage to buildings and infrastructure, trigger tsunamis, and reshape the Earth's surface with their force.
Each year, seismology bodies record tens of thousands of earthquakes, with some parts of the world at far greater risk of a damaging quake than others.
But how do earthquakes begin — and why are some much more devastating than others?
ABC: Earthquakes - Science
Engaging resources with video and explanatory diagrams, suitable for Years 7 and 8.
From the ABC Australia
Related key words: Ring of fire | Plate tectonics | Natural disasters | Earthquakes | Volcanoes | Tsunamis
Smithsonian National Museum of Natural History