Hey there little one! Do you know what kaifūsō means? No? Well, let me explain it to you in a way that even a 5-year-old can understand.
Kaifūsō is a Japanese word that means "release of radioactive materials into the environment". It happens when something like a nuclear power plant has a problem, and radiation leaks out. This is very dangerous for people, animals, and plants because radiation can hurt them and make them sick.
Think of it like a big spill of juice on the floor. The juice is like the radioactive materials, and the floor is like the environment. When the juice spills, it spreads out and makes a big mess, just like the radioactive materials spread out and make a big mess of the environment. And just like cleaning up a big spill, cleaning up radioactive materials is very difficult, takes a long time, and can be very expensive.
That's why it's important to be careful with things like nuclear power plants and make sure they are working correctly to avoid kaifūsō. We want to keep our environment safe and clean for everyone to enjoy!