Do You Know
Questions & Answers on General Knowledge.
When did the USA get its Constitution?
The Constitution of the USA was adopted in March 1789.
Why does copper conduct electric currents better than steel and lead? Why do copper and aluminum seem to conduct about the same?
Which is the biggest monitor lizard?
Why can’t I see just after I turn off the lights?
How has farming changed in the United States?
What is African theatre about?
How are newspapers made?
How does a light bulb work?
Why does a roller coaster end on a lower level than where it starts?
How does the combine harvester help farmers?
What is thermal energy?
Are all insect eggs round and smooth?
How do the thermometers with digital (electronic) numbers work?
Where is Istanbul?
Shouldn't the seesaw be completely horizontal in order to be balanced? How can it be balanced if it's not horizontal?
How was mail delivered before there were mail carriers?
How many countries are there in Africa?
What is a vortex?
When kinetic energy goes down (like in the Bernoulli tube), does potential energy go up?
Why are there sunspots?
What is the difference between an ocean, a sea, a gulf, and a bay?
What is induced polarization and what are its applications?
Are whales vegetarian?
Why is a disappointing purchase or investment called a “lemon”?
Who were the Mississippians?
How do I graph (line or pie) the time it takes different amounts of water to freeze?
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