Pure water (H2O) does not conduct electricity on its own.
46
One barrel of petroleum holds 42 gallons.
20
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
The force of a suction cup is calculated using F=AP.
15