The force of a suction cup is calculated using F=AP.
15
Pumice is the only rock that floats on water.
14
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Indoor pollution is 10 times more toxic than outdoor pollution.
62
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Sound travels about 4 times faster in water than in air.
408
Sound at the right vibration can bore holes through a solid object.
134
The average home creates more pollution than does the average car.
33