Audience versions of this page: FamilyOn March 11, 2011, Japan experienced the strongest earthquake in its recorded history. The earthquake struck below the North Pacific Ocean, 130 kilometers (81 miles) east of Sendai, the largest city in the Tohoku region, a northern part of the island of Honshu.The Tohoku earthquake caused a tsunami. A tsunami—Japanese for “harbor wave”—is a series of powerful waves caused by the displacement of a large body of water. Most tsunamis, like the one that formed off Tohoku, are triggered by underwater tectonic activity, such as earthquakes and volcanic eruptions. The Tohoku tsunami produced waves up to 40 meters (132 feet) high,More than 450,000 people became homeless as a result of the tsunami. More than 15,500 people died.The tsunami also severely crippled the infrastructure of the country. In addition to the thousands of destroyed homes, businesses, roads, and railways, the tsunami caused the meltdown of three nuclear reactors at the Fukushima Daiichi Nuclear Power Plant. The Fukushima nuclear disaster released toxic, radioactive materials into the environment and forced thousands of people to evacuate their homes and businesses.
Term Part of Speech Definition Encyclopedic Entry city Noun
large settlement with a high population density.
geographic territory with a distinct name, flag, population, boundaries, and government.
to disable or weaken.
harm that reduces usefulness or value.
to ruin or make useless.
very destructive or damaging.
forced removal of something, often people or organisms, from their communities or original space.
the sudden shaking of Earth's crust caused by the release of energy along fault lines or from volcanic activity.
conditions that surround and influence an organism or community.
to leave or remove from a dangerous place.
part of a body of water deep enough for ships to dock.
Encyclopedic Entry: harbor impact Noun
meaning or effect.
structures and facilities necessary for the functioning of a society, such as roads.
body of land surrounded by water.
Encyclopedic Entry: island power plant Noun
industrial facility for the generation of electric energy.
having unstable atomic nuclei and emitting subatomic particles and radiation.
any area on Earth with one or more common characteristics. Regions are the basic units of geography.
Encyclopedic Entry: region tectonic activity Noun
movement of tectonic plates resulting in geologic activity such as volcanic eruptions and earthquakes.
to cause or begin a chain of events.
ocean waves triggered by an earthquake, volcano, or other movement of the ocean floor.
volcanic eruption Noun
activity that includes a discharge of gas, ash, or lava from a volcano.
moving swell on the surface of water.