Chapter 20 Section 3 Chapter 20 Section 3 Review Page 508Review Page 508

1. Describe three 1. Describe three methods of desalinating methods of desalinating ocean water.ocean water.

• Heat water to evaporate and Heat water to evaporate and then condense the water vaporthen condense the water vapor

• Freezing water creates pure Freezing water creates pure water crystals and then melt the water crystals and then melt the iceice

• Reverse osmosis squeezes water Reverse osmosis squeezes water through a membrane to separate through a membrane to separate the salt from the pure waterthe salt from the pure water

2. Explain why 2. Explain why distillation can be an distillation can be an expensive method of expensive method of desalination.desalination.

• It requires a lot of energy to It requires a lot of energy to heat water until it evaporates heat water until it evaporates which can be very expensive.which can be very expensive.

3. List two important 3. List two important mineral resources in the mineral resources in the ocean.ocean.

• SaltSalt MagnesiumMagnesium

• ManganeseManganese BromineBromine

• IronIron CobaltCobalt

• CopperCopper NickelNickel

• PhosphatesPhosphates

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

• PetroleumPetroleum

5. Define the term 5. Define the term aquaculture, and explain aquaculture, and explain why aquaculture is why aquaculture is important.important.

• The raising of aquatic plants and The raising of aquatic plants and animals for human use.animals for human use.

• It is important because it is a It is important because it is a reliable, economical source of reliable, economical source of food.food.

6. Explain why beaches 6. Explain why beaches are especially vulnerable are especially vulnerable to ocean pollution.to ocean pollution.

• Beaches are closest to the likely Beaches are closest to the likely sources of pollution sources of pollution

The End??? Of Clem….The End??? Of Clem….

10.10.Use the following terms Use the following terms to create a concept map. to create a concept map.

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

Ocean resource

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

Ocean resource

desalination

distillation, freezing, distillation, freezing, reverse osmosis, reverse osmosis, petroleum, petroleum, aquaculture, fishing, aquaculture, fishing, salt, and pollutionsalt, and pollution

Ocean resource

fishing desalination

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

Ocean resource

aquaculture fishing desalination

distillation, freezing, distillation, freezing, reverse osmosis, reverse osmosis, petroleum, salt, ocean petroleum, salt, ocean resource, and resource, and pollutionpollution

Ocean resource

Petroleum aquaculture fishing desalination

distillation, freezing, distillation, freezing, reverse osmosis, salt, reverse osmosis, salt, and pollutionand pollution

Ocean resource

Petroleum aquaculture fishing desalination

pollution

distillation, freezing, distillation, freezing, reverse osmosis, saltreverse osmosis, salt

Ocean resource

Petroleum aquaculture fishing desalination

pollution salt

distillation, freezing, distillation, freezing, reverse osmosisreverse osmosis

Ocean resource

Petroleum aquaculture fishing desalination

pollution salt

freezing

distillation, reverse distillation, reverse osmosisosmosis

Ocean resource

Petroleum aquaculture fishing desalination

pollution salt

freezingdistillation

reverse osmosisreverse osmosis

Ocean resource

Petroleum aquaculture fishing desalination

pollution salt

Reverse osmosis

freezingdistillation