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).
How does a search engine work?
Why does the Sun look like a red disc during sunrise and sunset?
Why, when we don’t understand someone, do we say they’re talking “gibberish”?
Please explain the "Wagon Wheel Effect." How can the wheel appear to move forward, then backward, then stop, just by viewing it differently?
Is zero a number?
Why do I see my shadow on the sidewalk on a sunny day?
Who were the gladiators?
What holds the atoms in a molecule together?
I have noticed that the more I stir the milk into my coffee, the hotter it gets, even though the milk is cold. How does it work?
If I measure current from a photocell, am I indirectly measuring power as well?
How does a sound dish work? I know that it's a parabola, but I can only find drawings not explanations.
How can you run a clock off of a potato?
What are the gases that make up the Earth's atmosphere?
I don't understand the horizontal component of a ball thrown downfield. Does it have constant velocity and/or acceleration, even at the start?
Why are the secondary consequences of a greater event called the “aftermath”?
Why do we say “either fish or cut bait” when we mean “make up your mind”?
Is Mount Everest the world’s tallest mountain?
How does a cellular phone work?
What makes heat rise?
When you push up on an object, are you creating thermal energy or does that only occur when something does work on you?
Why does the Sun glow?
What was the 4004?
Is there any way to make a homemade fog machine, like they use in clubs?
What is the Joshua tree?
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Fast and Furious Cars in the world
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What to Eat in Sikkim
Rasabali is a sweet dish from Orissa, India. Rasabali is offered to Baladevjew, and originated in the Baladevjew Temple of Kendrapara. It is one of the Chapana bhoga of Jagannath temple.