What Is a Tornado and How Does It Form?
What Is a Tornado and How Does It Form? A tornado, or twister, is a violently rotating column of air that extends between the Earth’s surfac
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Thunderstorm
What Makes Hail?
During a thunderstorm, balls of ice, called hail, may fall. Hail starts as rain. Before the drops can fall, strong air currents carry them t
What Makes Thunder?
What Makes Thunder? A bolt of lightning is a big electric spark. During a thunderstorm, electrical charges are built up in the clouds. When
What Is Saint Elmo’s Fire?
Saint Elmo’s fire is the name given to the glow of light that is sometimes seen on ship masts, airplane wings and church steeples during a t
What Causes Lightning?
What Causes Lightning? Lightning is an electric current. During a thunderstorm, water droplets in the clouds become charged with electricity