Why Do Water Pipes Sometimes Burst in Winter?
Cold water pipes may burst in winter when the outside temperature falls below 0°C (32 °F) and the water turns to ice. The pipe’s wa
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Crack
What Message Is Inscribed on the Liberty Bell?
What Message Is Inscribed on the Liberty Bell? In America, there are many symbols that people equate with the concept of freedom. One of the
Why Does a Glass Crack When Hot Water Is Poured into It?
Why Does a Glass Crack When Hot Water Is Poured into It? An ordinary drinking glass may crack if you pour hot water into it. Glass expands,
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