Polar ice cap melting
How do the polar ice cap melting form?
At higher latitudes,the earth dosen’t receive much sunlight,therefore the temperatures remains low for most part of the year.Thus the water can’t remain in liquid form and it solidifies i.e.turns into ice.In case of our own planet:the northern and the sourthern poles are where the ice caps are located.
Earth’s north polor is covered by floating pack ice (sea ice)over the Arctic Ocean.Portions of the ice that don’t melt seasonally can get very thick.One-year ice is usually about a meter thick.The area covered by sea ice ranges between 9 and 12 million km2.
The land mass of the Earth’s south polor,in Antarctica,is covered by the Antarctica ice sheet.It covers an area of about 14.6 million km2 and contains 25-30 million km3 of ice.Around 70% of the fresh water on the Earth is held in this ice sheet.
The main reason for polor ice cap melting are that:geological changes,seasonal changes and global warming.