EARTH SCIENCE
CLIMATE AND ENVIRONMENTAL CHANGE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
As the ice on Earth melts-sea levels get lower
|
|
|
As the ice on Earth melts-the sea levels stay the same
|
|
|
As the ice on Earth melts ____ sea levels rise
|
|
|
None of the above
|
Detailed explanation-1: -Melting glaciers add to rising sea levels, which in turn increases coastal erosion and elevates storm surge as warming air and ocean temperatures create more frequent and intense coastal storms like hurricanes and typhoons.
Detailed explanation-2: -When salt is ejected into the ocean as sea ice forms, the water’s salinity increases. Because salt water is heavier, the density of the water increases and the water sinks. The exchange of salt between sea ice and the ocean influences ocean circulation across hundreds of kilometers.
Detailed explanation-3: -But our coastlines would be very different. If all the ice covering Antarctica, Greenland, and in mountain glaciers around the world were to melt, sea level would rise about 70 meters (230 feet). The ocean would cover all the coastal cities. And land area would shrink significantly.
Detailed explanation-4: -Despite the differences, both land and sea ice grow less and melt more with warmer temperatures. Scientists have found evidence of increased melting of both land and sea ice in recent years throughout the world, in response to warming temperatures.