Chapter 20 Section 3 Review Page 508

1. Chapter 20 Section 3 Review Page 508

2. 1. Describe three methods of desalinating ocean water. • Heat water to evaporate and then condense the water vapor • Freezing water creates pure water crystals and then melt the ice • Reverse osmosis squeezes water through a membrane to separate the salt from the pure water

3. 2. Explain why distillation can be an expensive method of desalination. • It requires a lot of energy to heat water until it evaporates which can be very expensive.

4. 3. List two important mineral resources in the ocean. • Salt Magnesium • Manganese Bromine • Iron Cobalt • Copper Nickel • Phosphates

5. 4. Identify the most valuable resource that can be obtained from the ocean. • Petroleum

6. 5. Define the term aquaculture, and explain why aquaculture is important. • The raising of aquatic plants and animals for human use. • It is important because it is a reliable, economical source of food.

7. 6. Explain why beaches are especially vulnerable to ocean pollution. • Beaches are closest to the likely sources of pollution

8. The End??? Of Clem….

9. Use the following terms to create a concept map. Desalination, distillation, freezing, reverse osmosis, petroleum, aquaculture, fishing, salt, ocean resource, and pollution.

11. Desalination, distillation, freezing, reverse osmosis, petroleum, aquaculture, fishing, salt, ocean resource, and pollution.

13. distillation, freezing, reverse osmosis, petroleum, aquaculture, fishing, salt, and pollution

15. distillation, freezing, reverse osmosis, petroleum, aquaculture, salt, and pollution.

17. distillation, freezing, reverse osmosis, petroleum, salt, ocean resource, and pollution

19. distillation, freezing, reverse osmosis, salt, and pollution

21. distillation, freezing, reverse osmosis, salt

23. distillation, freezing, reverse osmosis

25. distillation, reverse osmosis

27. reverse osmosis