Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
One 75-watt bulb gives more light than three 25-watt bulbs.
57
Diamonds can be shattered with a hammer.
-104
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Most dust particles in your house are made from dead skin!
67
Cold water weighs more than hot water.
93
The force of a suction cup is calculated using F=AP.
15