Quick Answer: Which Of The Following Describes The Tsunami In Indonesia In 2004?

Which of the following describes what happens to tsunami waves as they move toward the shore?

Consequently, as the tsunami’s speed diminishes as it travels into shallower water, its height grows. Because of this shoaling effect, a tsunami, imperceptible at sea, may grow to be several meters or more in height near the coast.

Which best describes a tsunami?

A tsunami is a series of waves caused by earthquakes or undersea volcanic eruptions. Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea. Out in the depths of the ocean, tsunami waves do not dramatically increase in height.

What caused the tsunami in 2004?

A powerful undersea earthquake that struck off the coast of Sumatra island, Indonesia, set off the 2004 Indian Ocean tsunami, also known as the Christmas or Boxing Day tsunami, on Sunday morning, Dec. 26, 2004. The quake caused the ocean floor to suddenly rise by as much as 40 meters, triggering a massive tsunami.

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Which is the best explanation for how earthquakes cause tsunami?

Most tsunami are caused by large earthquakes on the sea floor when slabs of rock move past each other suddenly, causing the overlying water to move. The resulting waves move away from the source of the earthquake event.

Can a tsunami happen far away and still destroy everything around you?

Tsunami waves can be very long (as much as 60 miles, or 100 kilometers) and be as far as one hour apart. The Indian Ocean tsunami traveled as much as 3,000 miles (nearly 5,000 kilometers) to Africa, arriving with sufficient force to kill people and destroy property.

What is the first sign of tsunami?

One of the signs of a potential tsunami is the occurrence of a very large earthquake that lasts for more than 20 seconds. If an area has been shaken by a very large earthquake, one should be on alert that shorelines located within the radius of the earthquake’s epicentre, may be hit by a tsunami.

How tsunami are formed?

A tsunami is a series of extremely long waves caused by a large and sudden displacement of the ocean, usually the result of an earthquake below or near the ocean floor. This force creates waves that radiate outward in all directions away from their source, sometimes crossing entire ocean basins.

What is called tsunami?

Tsunamis (pronounced soo-ná-mees), also known as seismic sea waves (mistakenly called “tidal waves”), are a series of enormous waves created by an underwater disturbance such as an earthquake, landslide, volcanic eruption, or meteorite. A tsunami can strike anywhere along most of the U.S. coastline.

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Where are tsunamis?

Tsunamis occur most often in the Pacific Ocean and Indonesia because the Pacific Rim bordering the Ocean has a large number of active submarine earthquake zones. However, tsunamis have also occurred recently in the Mediterranean Sea region and are expected in the Caribbean Sea as well.

Can you swim under a tsunami?

Survival, at this point, is a matter of luck. “A person will be just swept up in it and carried along as debris; there’s no swimming out of a tsunami,” Garrison-Laney says. “There’s so much debris in the water that you’ll probably get crushed.”

Could the 2004 tsunami happen again?

Large tsunamis have occurred in the United States and will undoubtedly occur again. Significant earthquakes around the Pacific rim have generated tsunamis that struck Hawaii, Alaska, and the U.S. west coast.

Who is responsible for tsunami?

A tsunami is a series of large waves generated by an abrupt movement on the ocean floor that can result from an earthquake, an underwater landslide, a volcanic eruption or – very rarely – a large meteorite strike. However, powerful undersea earthquakes are responsible for most tsunamis.

What are the 5 causes of tsunami?

What are the causes of tsunamis?

  • Earthquakes. It can be generated by movements along fault zones associated with plate boundaries.
  • Landslides. A landslide that occurs along the coast can force large amounts of water into the sea, disturbing the water and generate a tsunami.
  • Volcanic Eruption.
  • Extraterrestrial Collision.

Can a 7.1 earthquake cause a tsunami?

No, all earthquakes do not cause tsunamis. There are four conditions necessary for an earthquake to cause a tsunami: (1) The earthquake must occur beneath the ocean or cause material to slide in the ocean. (2) The earthquake must be strong, at least magnitude 6.5.

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How do volcanoes cause tsunamis?

According to this mechanism, waves may be generated by the sudden displacement of water caused by a volcanic explosion, by a volcano’s slope failure, or more likely by a phreatomagmatic explosion and collapse/engulfment of the volcanic magmatic chambers.

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