Pertanyaan

Jakarta people who passed Semanggi were shocked when hail hit in 22nd November 2018. What is hail? Hail is a type of precipatation, or water in the atmosphere. Hail is formed when drops of water freeze together in the cold upper regions of thunderstorm clouds. These chunks of ice are called hailstones. Most hailstones measure between 5 millimeters and 15 centimeters in diametre, and can be round or jagged. Hailstones are not frozen raindrops. Frozen rain falls as water and freezes as it nears the ground. Hail actually falls as a solid. Hailstones are formed by layers of water attaching and freezing in a large cloud. A frozen droplet begins to fall from a cloud during a storm, but is pushed back up into the cloud by a strong updraft of wind. When the hailstone is lifted, it hits liquid water droplets. Those droplets then freeze to the hailstone, adding another layer to it. The hailstone eventually falls to Earth when it becomes too heavy to remain in the cloud, or when the updraft stops or slows down. Certain parts of the world receive more hail than others. The approach of the summer monsoon season in India brings severe thunderstorms, often with tornadoes and hail. A particularly deadly hail storm in Moradabad, India, in 1888 killed more than 250 people. China also experiences frequent hail storms, as do parts of the Midwestern United States. Hailstones can cause extreme damage to buildings, vehicles, and crops. Not surprisingly, people have tried to find ways to prevent hail. What is the main idea of paragraph 3?