1.
Diamonds are the hardest substance known to man.
2.
Hydrogen is the most abundant element in the Universe
(75%).
3.
The typewriter was invented in 1829, and the automatic
dishwasher in 1889.
4.
No matter its size or thickness, no piece of paper can
be folded in half more than 7 times.
5.
The only letter not appearing on the Periodic Table is
the letter “J”.
6.
Hydrofluoric acid will dissolve glass.
7.
Sound travels about 4 times faster in water than in
air.
8.
There are between 100,000,000,000 and 1,000,000,000,000
stars in a normal galaxy.
9.
The hottest planet in the solar system is Venus, with
an estimated surface temperature of 864 F (462 C).
10. The
longest living cells in the body are brain cells which can live an entire
lifetime.
11. The
Cerebrum, also called the forebrain, is responsible for our language, memory,
movement and all. As you’re reading this and trying to understand it, you’re
using your Cerebrum.
12. Each
carbon nucleus (containing six protons and six neutrons) is made up from three
nuclei of helium.
13. It
was not until 1926 that Pneumatic tyres surpassed solid tyres in numbers used
on vehicles.
14. The
normal energy used by our brain is 0.1 calories per minute, and could go up to
1.5 during activities such as puzzle-solving.
15. The
diamond is the mineral as found in nature. There is no known material of
greater hardness on Earth, so in order to carve a diamond would have to use
another diamond.
16. The
moon is a planet just like the earth, only it is even deader.
17. The
pistol of a flower is its only protections against insects.
18. H2O
is hot water, and CO2 is cold water
19. Blood
flows down one leg and up the other.
20. Dew
is formed on leaves when the sun shines down on them and makes them perspire.
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