Earthquake

What is an Earthquake?

An earthquake is when the ground shakes. This shaking happens deep inside the Earth. It is like when you shake a jar of jelly – the jelly moves all around. Earthquakes can be tiny, so you can't feel them, or big enough to make buildings wiggle.

Most earthquakes happen in special places called faults. These are cracks in the Earth's surface where the ground moves. The Pacific Ring of Fire is a place where many earthquakes happen. It is like a big circle of shaking around the Pacific Ocean.

Why Do We Know About Earthquakes?

People have known about earthquakes for a very long time. In old stories, some people thought earthquakes were caused by gods or giant animals. For example, in Japan, there is a story about a giant catfish named Namazu that shakes the ground when it moves. Even today, scientists study earthquakes to keep people safe.

Fun Facts About Earthquakes

• Earthquakes can happen on other planets, too! We call them marsquakes on Mars and moonquakes on the Moon.
• Scientists use special tools called seismometers to measure earthquakes. These tools listen to the waves that move through the Earth.
• Some big earthquakes can make huge waves in the ocean called tsunamis. These waves can travel very fast and sometimes cause damage far away from where the earthquake starts.

Earthquakes remind us how powerful our planet can be, but scientists work hard to help people stay safe when the ground shakes.