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Noisy Facts series 3

Noisy Facts series 3
November 13, 2017 Georgie Paul
Georgie Paul
In Uncategorized

 

Not just cuddly!

Polar bears are nearly undetectable by infrared cameras.Thermal cameras detect the heat lost by a subject as infrared, but polar bears are experts at conserving heat. The bears keep warm due to a thick layer of blubber under the skin. Add to this a dense fur coat and they can endure the chilliest Arctic day.

 


 

Some metals are so reactive that they explode on contact with water. There are certain metals – including potassium, sodium, lithium, rubidium and caesium – that are so reactive that they oxidise (or tarnish) instantly when exposed to air. They can even produce explosions when dropped in water! All elements strive to be chemically stable – in other words, to have a full outer electron shell. To achieve this, metals tend to shed electrons. The alkali metals have only one electron on their outer shell, making them ultra-keen to pass on this unwanted passenger to another element via bonding. As a result they form compounds with other elements so readily that they don’t exist independently in nature. 🤔

 


 

Contrary to popular opinion, babies can do a lot more than eat, sleep, and poop 🤤 .Babies have around 100 more bones than adults. Babies have about 300 bones at birth, with cartilage between many of them. This extra flexibility helps them pass through the birth canal and also allows for rapid growth.  With age, many of the bones fuse, leaving 206 bones that make up an average adult skeleton.


 

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