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    Pangihutan Parpiso Lempar Bolonz
    The document is an explanation text about tsunamis with three paragraphs. It defines a tsunami as a series of waves generated by the rapid displacement of water on a massive scale, such as from earthquakes. Tsunamis have a small amplitude offshore but grow in height as they reach shallow water. While they seem like a passing swell at sea, tsunamis can be devastating as they approach land.

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    Explnation Text

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    Pangihutan Parpiso Lempar Bolonz
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    The document is an explanation text about tsunamis with three paragraphs. It defines a tsunami as a series of waves generated by the rapid displacement of water on a massive scale, such as from earthquakes. Tsunamis have a small amplitude offshore but grow in height as they reach shallow water. While they seem like a passing swell at sea, tsunamis can be devastating as they approach land.

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    The document is an explanation text about tsunamis with three paragraphs. It defines a tsunami as a series of waves generated by the rapid displacement of water on a massive scale, such as from earthquakes. Tsunamis have a small amplitude offshore but grow in height as they reach shallow water. While they seem like a passing swell at sea, tsunamis can be devastating as they approach land.

    Copyright:

    Attribution Non-Commercial (BY-NC)
    Download as DOCX, PDF, TXT or read online from Scribd
    Download as docx, pdf, or txt
    39 views5 pages

    Explnation Text

    Uploaded by

    Pangihutan Parpiso Lempar Bolonz
    The document is an explanation text about tsunamis with three paragraphs. It defines a tsunami as a series of waves generated by the rapid displacement of water on a massive scale, such as from earthquakes. Tsunamis have a small amplitude offshore but grow in height as they reach shallow water. While they seem like a passing swell at sea, tsunamis can be devastating as they approach land.

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    HALAMAN 1 DIISI -NAMA : RENALDO MARTUA SIMBOLON -KELAS : XII IPA 4 -EXPLANATION TEXT -JUDUL TSUNAMI

    A tsunami is a series of waves generated when water in a lake or in the sea is rapidly displaced on a massive scale. Earthquakes, landslides, volcanic eruptions and large meteorite impacts all have the potential to generate a tsunami. The effects of a tsunami can range from unnoticeable to devastating. The term of tsunami comes from the Japanese language meaning harbour (tsu) and wave (nami). Although in Japanese tsunami is used for both singular and plural, in English tsunamis is well established as the plural. The term was created by fisherman who returned to port to find the area surrounding the harbour devastated, although they had not been aware of any wave in the open water. A tsunami is not a sub-surface event in the deep ocean; it simply has a much smaller amplitude (wave heights) offshore, a very long wavelength (often hundreds kilometers long), which is why they generally pass unnoticed at sea, forming only a passing hump in the ocean.

    Tsunamis have been historically referred to as tidal waves because as they approach land they take on the characteristics of a violent onrushing tide rather than the sort of cresting waves that are formed by wind action upon the ocean (with which people are more familiar). However, since they are not related to tides, the term is considered misleading and its usage is discouraged by oceanographers. Tsunamis have a small amplitude (wave height) offshore, and a very long wavelength (often hundreds of kilometres long, whereas normal ocean waves have a wavelength of only 30 or 40 metres), which is why they generally pass unnoticed at sea, forming only a slight swell usually about 300 millimetres (12 in) above the normal sea surface. They grow in height when they reach shallower water, in a wave shoaling process described below. A tsunami can occur in any tidal state and even at low tide can still inundate coastal areas. All waves have a positive and negative peak, i.e. a ridge and a trough. In the case of a propagating wave like a tsunami, either may be the first to arrive. If the first part to arrive at shore is the ridge, a massive breaking wave or sudden flooding will be the first effect noticed on land. However if the first part to arrive is a trough, a drawback will occur as the shoreline recedes dramatically, exposing normally submerged areas. Drawback can exceed hundreds of metres, and people unaware of the danger sometimes remain near the shore to satisfy their curiosity or to collect fish from the exposed seabed. A typical wave period for a damaging tsunami is about 12 minutes. This means that if the drawback phase is the first part of the wave to arrive, the sea will recede, with areas well below sea level exposed after 3 minutes. During the next 6 minutes the tsunami wave trough builds into a ridge, and during this time the sea is filled in and destruction occurs on land. During the next 6 minutes, the tsunami wave changes from a ridge to a trough, causing flood waters to drain and drawback to occur again. This may sweep victims and debris some distance from land. The process repeats as the next wave arrives.

    (Ini dibuat nyil)

    (INI TIDAK USAH DIBUAT POWER POINT BUAT HAPALAN SAYA SAJA)
    TSUNAMI ACEH

    Aceh tsunami disaster losses in 2004. Swallowing around $ 7 milion fortunes were wiped out by the tsunami water The victim who died as a result of the tsunami around 240,000 people died. and millions of people suffered minor injuries and serious injuries. Until now, about 130,000 homes have been built in less than three years, along with a number of airports, roads and schools. This is the largest construction projects in developing countries. Tsunami is the world's largest tsunami ever. Because of the very large tsunami once, until the tsunami is not only in Indonesia but in other countries are close to the sea even peru. Now I would like to explain the process of the tsunami with the property that late I provide. Although this may be simple enough to make you all understand. Please look and enjoy watching.
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