Moist static energy is like a big bag of energy that helps us understand how moisture and temperature affect the air around us. Think of it like a backpack you wear on your back. The backpack is filled with things like food, water, and toys. The weight of the backpack depends on how much stuff is in it.
Now imagine the air around us is like the backpack. The air can also have things in it, like water vapor and heat energy. Just like the weight of the backpack depends on how much stuff is in it, the energy of the air depends on how much moisture and temperature it has.
When we talk about moist static energy, we are looking at the total amount of energy in the air, including the energy from the moisture and the temperature. This energy can be used to do things, like make the wind blow or create thunderstorms.
So, to sum it up, moist static energy is a way to measure the energy in the air that comes from both moisture and temperature. It's like a big bag of energy in the air that helps us understand how the weather around us works.