Scientists aren't sure what color dinosaurs were.
312
A ball of glass will bounce higher than a ball made of rubber.
73
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Iron weighs more after it rusts.
16
The sun is 330,330 times larger than the earth.
75
One ragweed plant can release as many as one billion grains of pollen!
51
In zero gravity, a candle's flame is round and blue.
16
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65