What percentage of Earths surface is covered by water?
4. List three desirable features of water. Answer: 5. TRUE/FALSE? A. Water has a very high heat capacity and changes temperatures very slowly. B. Water has a low surface tension; it is not attracted and does not adhere to other molecules. C. Water helps distribute heat throughout the earth. D. Water has a low heat of vaporization; that is, it evaporates very easily. E. Water expands when it freezes. F. Water exhibits capillarity; the ability to rise through small pores. G. Water functions well as a coolant. H. Water is easily polluted because it is a good solvent. Answers: 6. Which one of the following statements is false? A. We do not charge enough for water. B. We waste and pollute water. C. Water is one of the better-managed resources. D. More than 50% of organisms’ weight is water. Answers: 7. Which one of the four descriptions is most accurate concerning water? A. It contracts when it freezes and expands when it melts. B. It reaches its maximum density when it freezes. C. It break
