An explosive mine is a device that can cause a big boom when it's triggered. Imagine you have a toy that has a button and when you press it, it makes a loud sound. An explosive mine is like a really big version of that toy. But instead of just making a loud sound, an explosive mine can also make things go boom and create a big explosion that can hurt people or break things.
A mine is usually placed in the ground or in water where people might not see it. It's like playing a game of hide-and-seek, but the mine is the one trying to hide. When someone steps on the mine or touches it, it explodes. It's not a game anymore, it's very dangerous.
The explosion happens because of a chemical reaction inside the mine. Just like when you mix vinegar and baking soda, it makes a big fizz, the chemicals inside the mine mix together to make a big boom.
That's why it's very important to stay away from places where there might be explosive mines, and for people who work in those areas, they need to use special tools and be very careful to avoid accidentally setting off a mine.
In short, explosive mines are like giant toys that can hurt people and break things. They are very dangerous, and we need to be very cautious around them to stay safe.