A ball of glass will bounce higher than a ball made of rubber.
73
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
A cubic yard of air weighs about 2 pounds at sea level.
31
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
If the chemical sodium is dropped into water it will immediately and violently explode.
67
One third of the electricity produced on earth is used to power electric light bulbs!
75
One barrel of petroleum holds 42 gallons.
20
For every gallon of sea water, you get more than a quarter pound of salt.
45