Do You Know
Questions & Answers on General Knowledge.
Why are tornadoes so dangerous?
Tornadoes—violent, funnel-like storms of strong winds that usually form during thunderstorms— present danger to anyone nearby. These "twisters" can demolish anything in their path, including homes, people, cars, trees, animals, and even entire communities. Sometimes lightweight mobile homes are flipped over. A strong tornado that swept into Xenia, Ohio, on April 3, 1974, leveled a farmhouse and broke everything inside, leaving only three fragile items totally intact: a mirror, a case of eggs, and a box of Christmas ornaments! Occasionally, tornadoes do other strange things—like lifting a 386-ton railway train off its tracks and dropping it 16 feet (5 meters) away! In the United States, an average of 1,000 tornadoes spin up beneath thunderstorms each year. A downward flow of cold air from clouds meets a rising flow of warm air from the ground; if atmospheric conditions are just right, a tornado starts. They occur mainly in a 10-state area known as Tornado Alley, stretching from Texas to Nebraska that also includes Colorado, Iowa, Illinois, Indiana, Missouri, and Arkansas. Most weak tornadoes last less than 10 minutes and travel short distances. Powerful tornadoes have been known to last for hours and a few have traveled more than 100 miles (161 kilometers).
What is electricity?
Who was Little Jack Horner in the nursery rhyme?
Did other countries benefit from the Industrial Revolution?
How are a water lily’s leaves different?
How were the various kingdoms governed?
How does an integrated circuit store so much information?
How can you tell the different types of zebra apart?
Are fiddleheads and ferns related?
Why when we have no choice at all do we say it’s a “Hobson’s choice”?
How are volcanic islands formed?
Is the anaconda a constrictor?
I've heard of people using moonshine as fuel for cars and pick up trucks. Is that possible and, if it is, how well does it work?
What is light?
Why is smoking cigarettes bad for your health?
Why don’t polar bears freeze in the icy Arctic waters?
Who are the Inuit?
Who was Mona Lisa?
How long do trees and shrubs live?
Is a spinning toy top a perfect example of angular momentum?
A bird lands on an uninsulated 10,000 volt power line. Will it become extra crispy?
How is a dwarf planet different from other planets?
What does the term 'Blue Moon'mean?
Which was the largest planteating dinosaur?
How does current flow and return in a home electric hot water heater? I only see two black hot wires and no white return wire.
What is the definitions of a "Hanning window", a "rectangular window", and a "triangular window"?
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