Number 1, Hot water will turn into ice faster than cold water.If the water is initially hot, cooled water at the bottom is denser than the hot water at the top, so no convection will occur and the bottom part will start freezing while the top is still warm. This effect, combined with the evaporation effect, may make hot water freeze faster than cold water in some cases.
Number 2, The Mona Lisa has no eyebrows.
Some people say the Mona Lisa is an unfinished work. Some people say Leonardo painted the Mona Lisa with eyebrows, but they were erased over time. Why doesn’t the Mona Lisa have eyebrows? Because it was the fashion in the Renaissance to shave them. Women shaved their facial hair, including their eyebrows.
Number 3, The most common name in the world is Mohammed.
According to the sixth edition of The Columbia Encyclopedia (2000), Muhammad is probably the most common given name in the world, including variations. It is estimated that more than 150 million men and boys in the world bear the name Muhammad due to its relationship with the Islamic prophet Muhammad.
Number 4, When the moon is directly overhead, you will weigh slightly less.
The gravitational force of the Moon acting directly above the object reduces the gravitational force of Earth a little. This is the reason, Weight (force of gravity acting on the object) reduces when Moon is directly overhead.
Number 5, You can't kill yourself by holding your breath.
holding your breath is difficult because carbon dioxide is building up in your blood from not exhaling. Your stomach starts to rapidly convulse and contract. your brain will force you to take a breath, no matter what you did. However, you could severely harm yourself.
Number 6, It is physically impossible for pigs to look up into the sky.
Pigs can lie on their backs and see the sky, but cannot look directly upwards! It's the anatomy of their neck muscles and the spine that limits the movement of their head and restricts them to look totally upwards.
Number 7, Honey is the only food that doesn't spoil.
The honey's low water content and high acidity are the two main reasons it doesn't spoil – the bacteria that cause food to go off can't thrive in these conditions. Hydrogen peroxide also has antibacterial properties.
