2Tsunami is the Japanese word for “great harbor wave” Tsunami is the Japanese word for “great harbor wave”. Though sometimes called “tidal waves,” tsunamis have nothing to do with tides. Usually an undersea earthquake starts a tsunami’s waves rolling across the ocean. If you’ve ever tossed a pebble into a pond, then watched ripples spread out over the surface, you’ve seen this principle at work. The actions of earthquakes, landslides, and even meteorites may cause tsunamis to occur.
3What does the word "tsunami" mean. 1. High wave 2. Giant wave 3 What does the word "tsunami" mean? 1. High wave 2. Giant wave 3. Earthquake wave 4. Great harbor waveAnswer
7Suppose there is a big earthquake in the middle of an ocean Suppose there is a big earthquake in the middle of an ocean. The ocean floor shakes and creates waves. These waves spread out from the center of the quake to all directions. They travel at a speed of miles per hour. As these waves come near the land, they start to slow down, but they begin to grow higher. Once these big waves break or hit the land, they can cause serious damage. People get killed. Villages get washed away. Buildings get ruined.
8This entire village was swamped by waves and was destroyed. An aerial shot shows flattened houses near the coast of Banda Aceh on the Indonesian Island of Sumatra, January 5, 2005.
9The most recent tsunami was in Asia The most recent tsunami was in Asia. On December 26, 2004, there was a big undersea earthquake outside of an island called Sumatra. Sumatra belongs to a country call Indonesia. The undersea quake pushed the entire island of Sumatra 100 feet southwest. It created huge harbor waves These waves reached up to 50 feet high when they came ashore. Because there was no “tsunami warning system” in that area, People did not escape in time and over 155,000 died. The disaster is one of the worst ever recorded in history!
10The closest land area to the December 26, 2004 tsunami was an island called MadagascarSomaliaSumatraAnswer
19In the Pacific Ocean there is a “tsunami warning system” in operation near Pearl Harbor. Fortunately, tsunamis take time to travel, which can give populations in harm's way anywhere from a few minutes to many hours to flee. For this reason, 26 countries have banded together to establish a tsunami-warning system for the Pacific. There is not one yet in the Indian Ocean. If there were a tsunami near the United States, Hawaii would be the state at greatest risk.
20This Thai fishing boat was thrown up on shore by the tsunami. Many fishermen who were fishing out on the ocean were drowned.
21In December in the United States, it is the winter season, but in the areas near the Indian ocean, December is the summer season. People are vacationing and enjoying the beach and that is why so many of them were surprised by the tsunami.
27The largest wave ever recorded was not in the Indian Ocean but in Lituya Bay, Alaska. A reliable tsunami warning system for all oceans does not yet exist. There are tsunami watch bulletins that mean an earthquake with a force of 6.75 or greater has occurred somewhere, but most of the alarms issued have been 75% false.One of the warning signs of a tsunami is when water suddenly rushes from the shore out to sea. However, you only have minutes to react!
28Click on the photo and watch a video of how a tsunami develops. Continue
29Small tsunamis, that cause little damage, occur about once a year Small tsunamis, that cause little damage, occur about once a year. But waves with a height of 15 to 20 feet occur everyTen yearsTwo YearsFive yearsAnswer