Day 1 Homework: 6/17/13

Day One Homework: 6/17/13

P.7

Which is more critical in your opinion: lack of water or water pollution?

 To me lack of water is more critical because water is needed by humans to survive. Foul water can be purified, but you need water to even start the process of purification. Without water many household chores, emergency needs, and human survival could not be possible.

ISAS #1, 2, 8-13, 17 (p.23-24)

1. Assume that Jimmy Hendricks drank just packaged fruit juice during the water shortage. Does that mean he did not use any water? Explain.

If Jimmy Hendricks drank just packaged fruit juice during the water shortage that means he would use more water than if he just drank tap water. He would use more water because when combining  the liquid in the container with the water used to make the container, and the amount of water used to water fruit trees it actually all adds up to me more.

2.  List at east three indirect uses of water associated with the producing a loaf of bread.

Three indirect uses of water associated with producing a loaf of bread is 1) the water used to grow the wheat plant 2) shipping the bread by water and 3) baking the bread.

8. Has the world’s total water changed in the past 100 years? The past 1 million years? Explain

 No, the total water hasn’t changed because the amount of total water available is far more than enough. And each day liters of rain and snow falls in the United States, and that water is either used, or flows back into bodies of water, or evaporates into the air, and eventually falls again as part of the water cycle.

9.  Rank the following locations in order of greateat to least total water abundance on Earth: rivers, oceans, glaciers, water vapor.

 Oceans, glaciers, water vapor, and rivers.

10.  Consider this quotation: “Water, water, everywhere, nor any drop to drink.” Describe a situation in which this would be true.

 A situation in which this would be true would be if you were a person living in Riverwood. This is because you wouldn’t be able to drink the water supplied by the river because they don’t know what is killing all the fish, and therefore there is something wrong with the water, not allowing anyone to use it even though the river surrounds the people.

11.  Look at Figure 1.12 on p.16. What percent of water is used in irrigation and agriculture in    your U.S. region?

 In the west, 77% of water in used in irrigation and agriculture.

12.  Look at Figure 1.15 on p. 18. Fresh water makes up 2.8% of the Earth’s water supply. Calculate the percent of fresh water found in

a.     Glaciers and ice caps: 2.11%

b.     Lakes: 0.009%

13. Explain why it might be possible that a molecule of water that you drank today was once swallowed by a dinosaur.

 It is possible that a molecule of water that I drank today was once swallowed by a dinosaur because the water left the dinosaur through sweat or urine, and was then evaporated back into the air, and then will eventually fall again as part of the water cycle or hydrologic cycle.

17. Each person in the United States uses an average of 370 L of water daily. Other sources, however, report that U.S. per capita water use is 4960 L. If both values are correct, explain this apparent discrepancy.

If both of these values are correct, then the 4960 L is both the indirect and direct water uses, and 370 L is the amount of just the direct water use.

A.5 (p.17) #1-3

1. For each region in the United States, name the greatest single use of water.

a.     The East: Steam/Electric

b.     The South: Stream/ Electric

c.      The Midwest: Stream/ Electric

d.     The West: Irrigation/ agriculture

e.     Alaska: Mining

f.      Hawaii: Irrigation/ agriculture

2. Explain the difference in how water is used in the East and the West. Think about where most people live and where most of the nation’s factories and farms are located. What other regional factors help explain the general patterns of water use?

In the East, where there are more factories and industries, there is more of a need for water in those compartments; therefore, water in these areas are mostly used for steam and electrical purposes. However, in the West, where there is more farming and irrigation, water is used mostly  for irrigation and agricultural  purposes.

3. List two factors about the weather, economy, or culture that could explain the greatest water use within each of these six U.S. regions.

In The East, steam and electrical uses are the greatest water uses because of the different weather conditions, for example if it is hot then you use the heater and if it is cold you use the air conditioning, and because of the many factories and industries there is a use in steam as water. In the South, stream and electrical uses of water are also the greatest water uses because it becomes cold and hot depending on the season, so there is more need in heaters and air conditioning. In the South, there also mist be a great amount of factories. In the Mideast, it is also true because there is a great amount of water use on steam and electric purposes. Int he West, there are many farms, and moderate temperatures require more use for water for irrigation and agricultural use. In Alaska, there is a greater water use in mining because the cold weathers forces people to be inside and because of the industrial economy. In Hawaii, the plentiful lands and reasonable climates could explain the greatest water use in irrigation and agriculture in this region.

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