One 75-watt bulb gives more light than three 25-watt bulbs.
57
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Hot water can freeze faster than cold water.
181
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
A ball of glass will bounce higher than a ball made of rubber.
73
4.5 pounds of sunlight strike the Earth each day.
27