500
Why do some balls of hail have layers?
a) raindrops freeze from the inside out, forming one layer of ice at a time
b) water that freezes high in the atmosphere always forms layers.
c) each time a ball of hail goes up and down within a thundercloud, a layer of ice is added.
d) cracks form layers in the ball of hail when the hail hits the ground
What is each time a ball of hail goes up and down within a thundercloud, a layer of ice is added.