Day #1 Homework:
Part 1-Section Summary Questions
Both Direct and indirect uses of water must be considered when evaluating water use.
1. Assume that Jimmy Hendricks drank just packaged fruit juice during the water shortage. Does that mean he did not use any water? Explain.
- No because it takes 120 L of water (approximately) to make one 1.3-L can of fruit juice. In fact, fruit juice (from a container) involves more water than just a plain glass of tap water.
2. List at least three indirect uses of water associated with producing a loaf of bread.
1. Water to grow the wheat that's used to make the bread
2. Water to brush on top of the bread to make it crispy.
3. Water to clean up after you make the bread.
The amount of water available in Earth's hydrologic cycle is essentially fixed. The distribution of water is not always sufficient to meet local needs.
8. Has the world's total water changed in the past 100 years? The past 1 million years? Explain.
Yes! (For both because...)
- 100 Years: The population has grown which means that more people are drinking water, washing their cars, using water in the house, etc.
- 1 Million Years: Due to climate change and global warming.
9. Rank the following locations in order of greatest to least total water abundance on Earth: rivers, oceans glaciers, water vapor.
1. Oceans
2. Water Vapor
3. Glaciers
4. Rivers
10. Consider this quotation: "Water, water, everywhere, nor any drop to drink." Describe a situation in which this would be true.
- The water in a town is polluted causing nobody to have fresh water to drink.
11. Look at figure 1.12 on page 16. What percent of water is used in irrigation and agriculture in your U.S. region?
- 77% is used.
12. Look at figure 1.15 on page 18. Fresh water makes up 2.8% of Earth's water supply. Calculate the percent of fresh water found in
A. Glaciers and Ice Caps (2.11% of fresh water)
B. Lakes (0.009% of fresh water)
Connecting Concepts
13. Explain why it might be possible that a molecule of water that you drank today was once swallowed by a dinosaur.
- The water cycle causes water's left by dinosaurs (such as urine or sweat) evaporates into air causing it to turn into rain.
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.
- The first average could be just the average of drinking water daily, while the other average could express the average of water overall used daily, for example: washing your hands, taking a shower, gardening, as well as drinking water.
Part 2-A.5 Water Use in the U.S Questions
1. For each region in the United States, name the greatest single use of water.
A. The East (101)
B. The South (99)
C. The Midwest (101)
D. The West (100)
E. Alaska (100)
F. Hawaii. (100)
2. Explain the differences 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?
- The West is more irrigational and agricultural than the East while the east is more steaming and electrical. Other regional factories include: manufacturing or car companies.
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.
1. Hawaii is tropical so there would be more water there because of rainforests that produce rain, which produces more crops and also Hawaii, at one time, produced the most cattle in the U.S. causing grazing so they'll need water to drink.
2. Alaska have ice that causes glaciers to melt, also another rainy region.
3. The South: Florida is surrounded by water, also is more exposed to rainy weather. Georgia is supposedly a very big peanut state (produces peanuts) in which they need water to grow.
4. The West: California is a dry, desert making water consumption high. Also, the population in the West is very high making water use high (whether it being, taking showers, washing hands, swimming, or just drinking water). One of the biggest power plants is the hoover dam as well.
5. The Midwest: Places like Iowa, Ohio, Minnesota, Illinois, and Nebraska are the biggest farms states in the Midwest causing them to use water to grow their crops, like corn or wheat, plus using it to graze their animals.
6. The East: Virginia is a big farming state where water is needed to supply crops and animal grazing as well.
Part 3-Quick Blog Question
1. Note on p. 7 major questions about water supply and purity. Keep these in your mind all through the unit. Which is more critical in your opinion: Lack of water or water pollution?
- In my mind I believe lack of water because you could always purify the dirty water.
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