- What can you hear in space?
Well,almost nothing! Space is essentially empty and it cannot carry sound!
- You do know that light travels faster than sound. But did u know that sound travels 3 times faster through water than through air?
- Ancient science? In the 2nd century B.C. Greek astronomer Erastosthenes accurately measured the distance around the earth at about 40,000 km but nobody believed him.
- Want to try your hand at some paper folding?
A dry sheet of paper cannot be folded in half more than 7 times!
- A single bolt of lightening can heat up the atmosphere to 50,000 degrees Fahrenheit.
- A compass never points to the geographic north but to the magnetic north!
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