A result of global warming might be a rise in sea level.?

Question

True/False

Answer 1

True.

First, a misconception I want to clear up: sea ice does NOT lower the sea level, because it already displaces its own mass in water. The guy who pointed out that the "ice cubes in glass" analogy doesn't work is, in fact, absolutely correct. What lowers sea level is big LAND glaciers, such as exist in Greenland and Antarctica.

A land glacier forms when the seasonal snow pack in a region does not fully melt during summer. Over time the snow builds up, until eventually you can get a layer of ice more than a kilometer thick, such as exists in Antarctica (the ice is what the bottom layers of the snow pack turn into under pressure from the upper layers). As this happens the snow that becomes incorporated into the ice cap is taken out of the water cycle. Since most of the water vapor in the atmosphere comes from evaporation from the oceans the glacier is, essentially, taking water out of the oceans as it forms.

This is the reason that during the ice age, when Canada, Siberia, and the North Sea Shelf were covered with similar huge land glaciers, the sea level was about 120 meters lower than it is today. When all that ice melted 10,000 years ago it raised the sea level to what it is today.

Right now Antarctica is covered by a layer of ice 1.6 km thick. Greenland's ice cap is much smaller, but it also locks away water that would otherwise be in the oceans. If both caps were to melt the water thus liberated would raise the sea level another 80 meters.

In case you are interested, here is a site with a neat interactive map that lets you raise and lower the sea levels to see what the continents would look like. Raise the sea level 80 meters to see what would happen if all the polar ice melted.

http://merkel.zoneo.net/Topo/Applet/

Answer 2

True, the north and specifically south poles/ ice caps that keep the oceans and "world" cool might or will eventually melt and cause the sea levels to rise due to the melting ice which turns to water lol . Scientists estimate about 50 years before the sea level rises 20 feet. Global warming is not the correct terminology for what is goin out in the atmosphere its more of a global climate change, for as u can tell summers are warmer and Winters are cooler.

I suggest watching An Inconvenient Truth and The day After Tomorrow!

Answer 3

It depends. The theory of global warming predicts the melting of the ice caps, as a previous person wrote, but currently it seems that only the northern ice caps are melting. The southern ones may be growing.

The reason this is important is that the northern ice caps are basically floating while the southern ice caps are on land (Antarctica). Floating ice displaces water already, so when it melts, it does not cause an increase in the water level. Think of a glass of ice water that you leave out in the sun. When the ice melts, the glass doesn't overflow.

Now if the southern ice caps were to melt, it could result in an increase in sea level. However, this would require a large increase in temperature, not just fractions of degrees.

Answer 4

Those who are talking about ice melting in a glass of water and the water not overflowing are missing the point. The glaciers that are melting are on land now. The comparison is to taking an already full glass of water and tossing in an ice cube. The water will overflow every time.

Another effect of global warming is that the temperature of the oceans will rise and that will cause the water already in the oceans to expand. This may seem like a tiny effect, but when you consider how much of the earth is covered with water and how deep the oceans are, it will cause a sufficient rise in water levels to cause low-lying costal areas to go under water.

Someone said Antarctica is not losing ice. This is also not true. Huge chunks of ice are falling in the ocean there every year.

Answer 5

It is possible but ice expands when frozen so when it melts, the volume decreases. You will find that there will be more rainfall as opposed to a rise in sea levels.

But the answer to the true or false question would be true.

Answer 6

So they say , but if you put ice into a glass then fill to the rim the ice will melt but the water will not overflow !
And even if the sea level did rise i am sure there will be a way to channel the sea to the desert`s like the gobi / sahara / etc end of the problem !

Answer 7

lol, our class just studied this like a week ago. The awenser is true, becasue global warming has been melting the polar ice caps, and becasue of all the water left over from the melted ice cap, it will increase sea level bit by bit.
=)

Answer 8

one billion people interior the worldwide proceed to exist or close to a coast. some are wealthy,residing in sprawling homes, on an identical time as some are destructive, residing in humble shacks. yet worldwide warming would not discriminate. All homes placed in coastal factors would be afflicted via it. to no longer point out the appealing seashores the place we play volleyball, fly kites, build sand castles, and surf. It has to do with increasing sea stages. In different words, the conventional heights of calm seas will exchange into bigger. Already interior the final a hundred years, worldwide sea stages have risen 8 inches (20cm). 0.5 of it is by way of world warming. As water warms, it expands and takes up extra room. Ever attempt commencing up a clean jar of applesauce and the lid won't budge? in case you run the jar lid under warm water, it incredibly is plenty much less annoying to open. it incredibly is because of the fact the lid expands whilst it incredibly is warmer, too. yet in any different case sea stages upward thrust is whilst land-based ice melts and run into the sea. Ice is melting directly everywhere in the planet, yet climatologists are maximum apprehensive proper to the Greenland ice sheet. Greenland is the worlsd's best island, and better than 80 p.c. of it is roofed in ice. the persons residing there are selttled on the narrow, rocky coast.. it incredibly is complicated to have self belief that ice 2 miles (3 km) deep and as huge as 0.5 of the U. S. can soften, besides the fact that it has already began to. right this is the place the seashores are available in. Twenty-one ft (ninety six.4 m) is tremendously tall. it incredibly is bigger than 3 Shaquille O'Neals stacked uup. All that water is going to eat away at latest coastlines. which capacity we are able to could desire to redraw the maps of the worldwide because of the fact entire blocks of land which at the instant are above sea point will ber under water.

Answer 9

What I want to know is how we were able to defeate GLOBAL COOLING of the 1970's So Quitely that now we here nothing about it. Possibly we could use some of those very same techinics that we used then because the very same things that cause GLOBAL COOLING are the causes of Global Warming of today....

Answer 10

True.

It has to do with the earth warming and melting the glaciers thus rising the sea level.