If the global climate were to warm significantly as a result of the greenhouse effect or other climatic change, the Arctic ice cap would start to melt. This ice cap contains the equivalent of some 680,000 cubic miles of water. More than 200 million people live on land that is less than 3 feet above sea level. In the United States several large cities have low average elevations. Three examples are Boston (14 feet), New Orleans (4 feet), and San Diego (13feet). In this exercise you are to estimate the rise in sea level if the Arctic ice cap were to melt and to determine whether this event would have a significant impact on people living in coastal areas.



(d)Discuss the implications of your calculation. How would cities such as Boston, New Orleans, and San Diego be affected?

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Directions: Complete each of the following statements.

1. A ___________________ is a group of words with its own subject and verb.

2. A dependent clause is another name for the _______________ clause.

3. The two types of clauses are the ____________________clause and the

__________________ clause.

4. The ______________________ clause expresses a complete thought and can stand alone as a sentence.

5. The ______________________ clause has a subject and a verb, but it does not express a complete thought.

1. A clause is a group of words with its own subject and verb.

2. A dependent clause is another name for the subordinate clause.
3. The two types of clauses are the independent clause and the subordinate clause.
4. The independent clause expresses a complete thought and can stand alone as a sentence.
5. The subordinate clause has a subject and a verb, but it does not express a complete thought.

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Which description defines a dependent clause?

A. It contains a subject and a verb but cannot stand alone.
B. It is a group of words containing a subject or a verb but not both
C. It can stand alone as a sentence
D. It expresses a complete thought.

Which choice best describes the function of phrases and clauses?

A. to ensure sentences are complete
B. to make conversations fun
C. to add detail and meaning
D. to express thoughts and ideas

1. A dependent clause is defined as:

A. It contains a subject and a verb but cannot stand alone.

2. The function of phrases and clauses is to:

C. to add detail and meaning.

To estimate the rise in sea level if the Arctic ice cap were to melt, we need to consider the volume of the ice cap and how that volume would be distributed in the world's oceans. The Arctic ice cap contains the equivalent of 680,000 cubic miles of water.

To get an estimate of the rise in sea level, we need to convert cubic miles to cubic kilometers since the standard unit for sea level rise is in meters.

To convert cubic miles to cubic kilometers, we can use the conversion rate of 1 cubic mile = 4.16818 cubic kilometers. So, the volume of the Arctic ice cap in cubic kilometers would be:

680,000 cubic miles * 4.16818 cubic kilometers per cubic mile = 2,834,127.2 cubic kilometers

To estimate the rise in sea level, we need to consider the total volume of the world's oceans. The volume of the world's oceans is estimated to be approximately 1,332,000,000 cubic kilometers.

So, if the Arctic ice cap were to melt completely, the rise in sea level would be:

2,834,127.2 cubic kilometers / 1,332,000,000 cubic kilometers * 100 = 0.2127%

This means that the sea level would rise by approximately 0.2127% if the entire Arctic ice cap were to melt.

Now, let's discuss the implications of this calculation for cities like Boston, New Orleans, and San Diego.

For Boston, with an average elevation of 14 feet (which is approximately 4.27 meters), a sea level rise of 0.2127% would result in a rise of:

4.27 meters * 0.002127 = 0.00908 meters, or 9.08 millimeters

This means that Boston would experience a rise in sea level of approximately 9.08 millimeters if the Arctic ice cap were to melt completely. This is a relatively small increase that might not have a significant impact on the city.

For New Orleans, with an average elevation of 4 feet (which is approximately 1.22 meters), a sea level rise of 0.2127% would result in a rise of:

1.22 meters * 0.002127 = 0.0026 meters, or 2.6 millimeters

Similarly, San Diego, with an average elevation of 13 feet (which is approximately 3.96 meters), would experience a rise in sea level of approximately 8.4 millimeters.

Based on these calculations, it seems that the rise in sea level resulting from the complete melting of the Arctic ice cap would not have a significant impact on cities like Boston, New Orleans, and San Diego. However, it's important to note that these estimates are based solely on the melting of the Arctic ice cap and do not take into account other factors that could contribute to sea level rise, such as the melting of glaciers and thermal expansion of seawater due to global warming. Therefore, it is crucial to continue monitoring and addressing climate change to mitigate potential impacts on coastal areas.