Okay, little buddy! Imagine a firefighter as a superhero who helps to keep us safe from fires. When there's a fire, they need to use lots of water to cool it down and make it safe again.
But here’s an important part: sometimes, they need just a little water, and sometimes they need a lot!
Firefighters use something called a 'fire hose lance' to help with this. It’s like a special tool that helps them control how much water comes out of the hose. Think of it like a water gun that can spray a tiny bit or a huge stream of water depending on how you squeeze it!
When they are really close to the fire, they might use less water because they don't want to get too wet or send too much water in the wrong place. But when the fire is big and super hot, they need to shoot out a lot of water to cool it down quickly.
So, the fire hose lance helps firefighters to be smart about using water—like when we share a toy, we want to make sure we use just the right amount!