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  • Hey, Bob! Why do you look confused?
  • It all starts with the Sun. It heats up the ground, which then heats up the air particles touching it through conduction. The warm air rises because it is lighter and more spread apart. The warm air already has water molecules in it due to the evaportation happening around it. The water vapor in the air rises with the warm air and condenses through condensation.
  • Well, my science class is talking about clouds and hailstorms, but I just don't get it!
  • Condensation is when water vapor in the air cools down and forms back into a liquid.
  • After the condenstation forms, it grabs onto little dust particles and as more droplets join them, they form a big cloud!
  • But there's always convection in a cloud. The cold air near the top gets too cold and sinks because it is heavier and more compact. The warmer air near the bottom rises because it is lighter and more spread out. This continious cycle creates a cycle in the cloud. This is circulation and important to make hail form!
  • Hail falls because the warm air coming up into the cloud is too weak. The warm air causes an updraft. This updraft might be too weak to compare to gravity. When the updraft is stronger than the gravity pushing down on the hail, the hail gets pushed back up so that it can start the cycle again. When the updraft is equal to the gravity, the hail floats in place. The hail can only fall when the updraft is too weak.
  • Hail forms due to crystalization. This is when the water vapor in the clouds gets too cold and freezes. Hail forms when two freezing droplets collide with each other. When they collide, they stick together. The hail continues to grow because of the convection I talked about earlier.
  • Wow, this is going to help so much, thank you!
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