The Day the Earth Shook and the Ocean Roared

Imagine the ground shaking like a giant trampoline and a giant wave crashing ashore! That's what happened in Japan.

Images

Scar of 2011 Tōhoku earthquake and tsunami

Scar of 2011 Tōhoku earthquake and tsunami

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2011 Tōhoku earthquake and tsunami damage Iwaki, Fukushima 1
2011 Tōhoku earthquake and tsunami damage Iwaki, Fukushima 2
Scar of 2011 Tōhoku earthquake and tsunami
A seismogram of 2011 Tōhoku earthquake and tsunami
Scar of 2011 Tōhoku earthquake and tsunami
Ogatsu Port after the 2011 Tōhoku earthquake and tsunami
Scar of 2011 Tōhoku earthquake and tsunami
Scar of 2011 Tōhoku earthquake and tsunami
Scar of 2011 Tōhoku earthquake and tsunami
Scar of 2011 Tōhoku earthquake and tsunami
2011 Tōhoku earthquake and tsunami damage Matsushima, Miyagi

Key Facts

Earthquake Strength
It was the fourth most powerful earthquake ever recorded in the world since 1900.
Tsunami Height
Waves reached up to 40.5 meters (133 feet) tall, taller than a 13-story building.
Tsunami Speed
Waves traveled inland at speeds of up to 700 km/h (435 mph).
Date of Event
March 11, 2011.

Meet the Mighty Shaker!

On March 11, 2011, something HUGE happened deep under the ocean near Japan. It was an earthquake, but not just any earthquake! It was so powerful, it's like the Earth suddenly sneezed with all its might.

This giant shake lasted for about six minutes, which is a super long time when the ground is rumbling. It happened way out in the Pacific Ocean, 72 kilometers (45 miles) away from the coast. That's like the distance from your school to a faraway park!

When the Ocean Woke Up!

After the big shake, the ocean decided to join the party, but not in a fun way. The earthquake pushed the water up, creating a giant wave called a tsunami. In some places, this wave was as tall as a 13-story building!

It zoomed towards the land at the speed of a race car, about 700 kilometers per hour (435 mph). When it hit, it traveled 10 kilometers (6 miles) inland, which is like going from your house all the way to the next town!

A Super Scary Surprise

This earthquake was the strongest ever recorded in Japan, and one of the strongest in the whole world since we started measuring earthquakes with special tools. It was so strong that it caused a big problem at a place called a nuclear power plant. This is a place that makes electricity using special science.

The earthquake and the tsunami made the machines that keep it cool stop working, which caused a big accident. Many people had to leave their homes to stay safe.

Remembering the Day

This event is sometimes called the 'Great East Japan Earthquake' or '3.11' because of the date it happened. It was a very sad day for many people in Japan. Sadly, almost 20,000 people lost their lives, and many more were injured or had to move away from their homes. It reminds us how powerful our planet can be and how important it is to be prepared for nature's big surprises.

Frequently Asked Questions

What caused the giant earthquake in Japan in 2011?+
The Pacific Plate slipped under the North American Plate, creating a huge earthquake that shook the ground like a giant trampoline.
How high were the waves that hit the coast during the tsunami?+
The waves reached up to about 40.5 meters, which is as tall as a 13‑story building.
Why was it hard for people to escape before the waves came?+
The warning time was only eight to ten minutes, and the cold weather and snow made it even harder to run away.
What happened to the Fukushima nuclear plant after the tsunami?+
The tsunami flooded the plant, stopped the cooling systems, and caused explosions that released radioactive gas.
How much money did the disaster cost Japan?+
The damage was over $300 billion, with insurance losses between $14.5 and $34.6 billion.
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Based on content from Wikipedia · Licensed under CC BY-SA 4.0