Do You Know
Questions & Answers on General Knowledge.
What is the significance of the troposphere in the weather pattern?
The troposphere is the layer closest to the Earth's surface, and it is here that weather is created. Air in the troposphere rises and falls, helping to form clouds, rain and snow. This layer stretches about 8–14.5 kilometres (5–9 miles) above sea level.
How did the Mercedes automobile get its name?
What is the force produced when two cars crash?
When a plane drops a nuclear bomb, what sets the detonation process into effect?
What is a supernova?
What is an interference pattern in lasers?
How do submarines sink below the water and then rise?
Can a rocket, starting back toward the earth from 30,000 feet, reach the speed of sound before reaching the earth?
Why do jet airplanes leave white trails in the sky?
Why do Mexicans call Americans “gringos”?
Can a tortoise swim?
Why is a severe snowstorm called a “blizzard”?
How does a rotary phone switching system distinguish between the off-hook signal and the dialing signals, one through ten?
At what temperature does paper burn?
Why did the colonists in the United States want to be independent of Britain?
Which is the smallest flightless bird?
Why did the Mesoamericans bury jewellery with their dead?
Were the Mesopotamians really the first people to develop writing?
How does light cancel in destructive interference?
Is it possible to create a "fog" in a small enclosed area without using dry ice or ultrasound?
Why do we say that a political candidate on a speaking tour is “on the stump”?
Why is viscosity important in motor oil for today's high revving engines?
Why does my dog wag its tail when it’s happy to see me?
Where were the first railroads?
I would like to know a little more about the ac slip ring motor and its uses, particularly in elevators.
What's the difference between fluorescent, phosphorescent, and triboluminescent?
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