One 75-watt bulb gives more light than three 25-watt bulbs.
57
Pure water (H2O) does not conduct electricity on its own.
46
Iron weighs more after it rusts.
16
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Hot water can freeze faster than cold water.
181
The force of a suction cup is calculated using F=AP.
15