Okay kiddo, do you know what an emergency is? It's when something really bad is happening and we need to stay safe. In case of emergencies, we have something called a standard emergency warning signal.
It's like a secret code that tells everyone that there's an emergency and they should be alert and stay safe. The signal is usually in the form of loud sirens or loudspeakers that make a very loud and distinct noise.
Now, different emergencies have different signals. For example, if there is a fire, the warning signal will be a loud and continuous siren. It's like when you play with your fire truck and sirens that go "wee-oo-wee-oo", except louder and longer.
If there is a tornado, the warning signal will be different. It will sound like a siren going up and down, kind of like the sound when you slide down the playground slide.
So, the standard emergency warning signal is like a secret code that tells us when there is an emergency, and we need to be careful and stay safe. Listen to the signal and follow what the grown-ups tell you to do.