The hypsometric equation is a fancy way to figure out how high up you are in the air. It's like playing a game of "Counting Stairs" but for the sky. Instead of stairs, we use something called "pressure" to figure out how high up we are.
So, here's how it works. When we are on the ground, the air pressure is really high because there is a lot of air pushing down on us. As we move higher and higher up, that air pressure gets lower and lower because there's less air pushing down on us.
Now, imagine you're carrying a heavy backpack up a mountain. As you climb higher, the weight of your backpack starts to feel lighter because the air pressure is lower. The same thing happens to the air around us - as we climb higher, the air pressure gets lower.
Scientists use the hypsometric equation to figure out how much the air pressure changes as we climb higher. This helps them figure out how high up we are in the sky, even if we don't have any fancy equipment to tell us.
So there you have it, the hypsometric equation is like counting stairs, but for the sky - it helps us figure out how high up we are using air pressure.