3. a) This is an example of indirect water use because we cannot directly measure this use of water. We do not know how much was used and we did not make the filter paper.
b) This is a direct use because we can measure how much was used to pre-moisten the gravel.
c) This is also a direct use because the water running into the apparatus can be measured. Unless the “cooling” was referred to cooling done at the manufacturer’s, which makes it an indirect use.
4. Purifying water means removing it from any unnecessary or modifying substances.
5. Sand filtration, distillation, and charcoal filtration and adsorption.
6. In the oil-water separation, oil was removed from the foul water. In the sand filtration solid particles, like coffee grounds were filtered out. In the charcoal filtration and adsorption, substances that were making the water cloudy and smelly were removed.
7. a) The procedure used in the foul water lab will not purify seawater because that process does not removed salt. Salt particles dissolve in water and cannot be filtered out.
b) To purify seawater for drinking, one would have to use the distillation process. This evaporates the salt and separates it from its water source. Also, an electrical conductivity test could be held to see if any salt particles were left over.
No comments:
Post a Comment