One 75-watt bulb gives more light than three 25-watt bulbs.
57
The sun is 330,330 times larger than the earth.
75
Pumice is the only rock that floats on water.
14
If the chemical sodium is dropped into water it will immediately and violently explode.
67
A cesium atom in an atomic clock beats over nine billion times a second.
43
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
