Japan hit by powerful quake, then 100 aftershocks follow

When the earth shakes very hard, it is scary. But did you know that one big earthquake usually creates many smaller ones after? This is what happened in Japan recently.

A very strong earthquake hit Japan. It killed 13 people and hurt many more. The ground shook hard. Buildings moved. People ran outside to stay safe.

But the danger did not stop. After the big quake, over 100 smaller earthquakes came next. We call these "aftershocks." Aftershocks are normal. When the earth moves in a big way, it keeps moving for hours or days. Each small shake is an aftershock.

The scary part? Officials say the aftershocks could be very strong too. Some aftershocks could reach magnitude 7. This is still a powerful earthquake. So people must stay alert and ready. They should keep emergency supplies near. They should know where to go if the ground shakes again.

Japan knows earthquakes well. Most Japanese people learn what to do from a young age. They practice earthquake drills at school and work. They know how to stand in a doorway or get under a table. They know not to run outside if glass could fall.

Experts tell people: do not panic, but stay careful. More aftershocks will probably come. They will get weaker over time. But for now, stay ready. Have water, food, and a flashlight in your home. Keep your phone charged. Know your family's meeting place.

Earthquakes remind us that nature is very powerful. We cannot stop them. But we can prepare. We can learn. We can stay calm and help each other.

Inspired by reporting from BBC News.