The total volume of ice in the Antarctic is about \(3.01 \times 10^{7} \mathrm{km}^{3} .\) If all the ice in the Antarctic were to melt completely, estimate the rise, \(h,\) in sea level that would result from the additional liquid water entering the oceans. The densities of ice and fresh water are \(0.92 \mathrm{g} / \mathrm{cm}^{3}\) and \(1.0 \mathrm{g} / \mathrm{cm}^{3},\) respectively. Assume that the oceans of the world cover an area, \(A,\) of about \(3.62 \times 10^{8} \mathrm{km}^{2}\) and that the increase in volume of the oceans can be calculated as \(A \times h\).

Short Answer

Expert verified
The sea level would rise approximately 67.32 m if all Antarctic ice were to melt completely.

Step by step solution

01

Calculate the Total Volume of Melted Ice

Since 1 g of ice melts to 1 g of water, and the densities of ice and water are 0.92 g/cm³ and 1.0 g/cm³ respectively, we can find the volume of water produced when all the ice melts by using the formula: \[ V_{water} = V_{ice} \times \frac{Density_{ice}}{Density_{water}} \] where \(V_{water}\) is the volume of water, \(V_{ice}\) is the volume of ice, \(Density_{ice}\) is density of ice and \(Density_{water}\) is the density of water. Heap in mind that initial volume of ice is given in km³ and we need to convert it to cm³ for consistency with density units. 1 km³ = \(10^{15}\) cm³.
02

Calculate the Rise in Sea Level

The volume of the resulting water will spread around the world's oceans and the sea level will rise accordingly. This rise in sea level, \(h\), can be calculated by dividing the volume of water, \(V_{water}\), by the area of the oceans, \(A_ocean\). Hence: \[h = \frac{V_{water}}{A_{ocean}}\] Again, bear in mind the units. The area of the oceans is given in km² , thus we should perform a conversion from km² to cm²: 1 km² = \(10^{10}\) cm² .
03

Substituting values

Now we substitute the given values into formulas outlined in steps 1 and 2 and calculate the final answer. Remembering about all necessary unit conversions.
04

Check the Answer

Finally, as common practice, it's always important to make sure the answer makes sense in the context of the problem. In this case, double-checking whether calculated value for sea level rise does seem plausible given the known data about the Earth's hydrosphere.

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