There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Pumice is the only rock that floats on water.
14
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Sound travels fifteen times faster through steel than through air.
134
The force of a suction cup is calculated using F=AP.
15
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Pure water (H2O) does not conduct electricity on its own.
46
Scientists in Germany have developed a candy that doesn't cause cavities.
11