Homework #2

ISAS page 23

3. 

1. Manufacture of the filter paper= indirect water use (running machinery, cleaning, and using water for the paper)
2. Premoistening of the sand and gravel= direct water use. (measuring exactly how much water is used to moisten the gravel)
3. Use of water to cool the distillation apparatus: direct water use. (measuring exact amount of water that is needed)

4. Puryfying water means filtrating the water or cleansing the water of dirt or unwanted materials.

5. oil-water separation, sand filtration, charcoal adsorption and filtration

6. During the oil-water filtration, oil was removed from my sample of foul water. During the sand filtration step, coffee grounds were removed from my sample. And during the charcoal adsorption and filtration step, both the color and odor were removed from the foul water sample.

7. The solid particles in the foul water were heterogenous. But, on the contrary, salt water is homogenous. So, since salt water is homogeneous foul water is heterogeneous, the same procedure will not work for both types of water. To make the seawater drinkable, the water would need go through distillation so the salt could be separated form the water.

pg. 22

1. washing cars, showering, washing pots and pans
2. drinking water to stay hydrated
3. I could reduce my water use by taking shorter showers to conserve water. 
4. I could use impure water for washing my car. this water would be taken from      dish washing.