WHY ? is our attempt to answerall the doubtfulness every little Kyd asks . Do you have a question ? transport it to why@mentalfloss.com .
really , it does ! But only in some places where it ’s really , really moth-eaten , like the Arctic or Antarctica . Water is made of tinymolecules(MOL - uh - kyools)that move around a mint . As the temperature fuck off colder , the water particle slow down . When the temperature falls to 32 ° F ( F is short forFahrenheit ) , these behind - moving corpuscle find each other and start stick together to form icing crystals .
Ocean water is different from fresh water , which you discover in lakes , ponds , and river . Ocean water has salt break up in it . Salt has small particles called ions that beleaguer the water moleculesand keep them from perplex together to form Methedrine . Ice will only begin to form when the sea piss stimulate even colder — about 29 ° F .
As ocean H2O gets colder , it get denser . That means its molecules pack tightly together . Because it ’s more dense , this salty water system begins to go down . That leaves less salty water on the top of the body of water . And this piddle commence to stop dead . Sea ice has almost no salinity in it . In fact , if you dethaw it , you could salute it !
In places that get super cold , like around the North and South Poles , there is a lot of ocean ice at the aerofoil — especially in winter . That does n’t mean the whole ocean is frozen , though . Under the ice , the ocean water is still there . Otherwise , it would be very hard for seal and Pisces to drown , and for Arctic frigid bears and Antarctic penguins to dive below the icy open to hunt them .
More and more ocean shabu melts every year . To watch more about why this is authoritative , watch this Discovery video ondisappearing penguin .
