"Ocean Utilization and Protection" PPT download

Description

"Ocean Utilization and Protection" PPT download

Part One: Conditions for Formation

What are the natural conditions that contribute to my country’s rich and diverse marine biological resources?

①Across three temperature zones

②Sea water temperature is moderate

③The continental shelf is wide in area

What are the three categories of marine biological resources?

marine animal resources

Marine plant resources

Marine microbial resources

The rich ocean is the cradle of the origin of life. Many organisms on the earth developed from the ocean. 80% of animals and plants still live in the ocean. Among the 63 classes in the animal and plant kingdoms, there are actually 51 classes in the ocean. There are approximately more than 200,000 species of marine life, which are divided into marine plants, marine animals and marine microorganisms according to their properties.

Marine utilization and protection PPT, part 2: rich mineral resources

China is rich in marine mineral resources, mainly including:

1. Oil reserves are 2.2 billion tons.

2. Natural gas reserves reach 48 billion cubic meters.

3. There are more than 60 types of coastal sand mines with a storage capacity of 1.6 billion tons.

All coastal placers in the world can be found along the coast of my country.

Marine chemical resources

Water is the source of life, but 96.53% of the earth is concentrated in the ocean. The composition of seawater is very complex, and the ocean contains extremely rich chemical resources.

Making salt from sea water

The main methods for producing salt from seawater are: salt field method, electrodialysis method and freezing method. Among them, the salt pan method has the longest history. The salt pan method is also called the beach sun method. The salt pans are built beside the beach. They take advantage of the gradually rising slope of the beach to create pools like escalators. Seawater is pumped into the pool using high tides or using windmills and pumps. The sea water flows through several pools. As the wind and sun blow, the water continues to evaporate, and the salt concentration in the sea water becomes higher and higher. Finally, the concentrated salt water enters the crystallization pool and continues to evaporate until salt crystals are precipitated. my country is the world's largest salt-producing country, with an annual salt production of nearly 20 million tons, accounting for 80% of the world's salt production.

Marine Utilization and Protection PPT, Part 3: Knowledge Consolidation:

1. At present, human development of marine resources mainly involves the development of the ocean ( ).

A. Biological resources B. Mineral resources C. Energy D. Chemical resources

2. The largest fishing ground in my country is ( )

A. Beihai Fishing Ground B. Yellow Sea Fishing Ground C. Zhoushan Fishing Ground D. Taiwan Strait Fishing Ground

3. Protecting marine resources should be done ( )

A. Prohibit overfishing of marine biological resources B. Prevent marine pollution C. Integrate catching and breeding D. Strengthen offshore fishing intensity and control the development of coastal aquaculture and offshore fishing industries

4. The largest salt field in my country is ( )

A. Changlu Saltworks B. Butai Saltworks C. Yinggehai Saltworks D. Qaidam Saltworks

5. Among various types of marine pollution, the one that is most harmful to marine biological resources is ( )

A. Pesticides and fertilizers B. Industrial wastewater C. Petroleum pollutants D. Coastal garbage

6. my country’s current level of ocean development ( )

A. Already very high B. Rich development experience and methods C. Still very low D. Created a high annual output value for the country

7. The provincial administrative region with the largest proportion of land reclamation in my country is ( )

A. Hong Kong B. Macau C. Taiwan D. Hainan

Marine Utilization and Protection PPT, Part 4: Thoughts after class:

1. What are the two main aspects of marine environmental problems?

2. Where do the pollutants in marine pollution mainly come from? What are the dangers of ocean pollution?

3. What are the causes of marine ecological damage? What are the dangers of marine ecological destruction?

4. Where does marine oil pollution mainly come from? What's the harm? How to clean up ocean oil pollution?

5. What sea rights disputes does my country have with neighboring countries?

What are your thoughts on these disputes?

What do you think is the solution?

Keywords: Free download of Geography PPT courseware for the second volume of eighth grade version of Business Planet Edition, PPT download of ocean utilization and protection, .PPT format;

For more information about the "Ocean Utilization and Protection" PPT courseware, please click the "Ocean Utilization and Protection ppt" tab.

"Marine Utilization and Protection" PPT courseware:

The first part of the PPT courseware "Ocean Utilization and Protection": Course content: Think about the diverse biological resources. my country's marine biological resources are very rich, with more than 20,000 species, including more than 3,000 species of fish. Then, the formation of our country's oceans Rich in biological resources...

"Marine Utilization and Protection" PPT:

"Ocean Utilization and Protection" PPT Part One Content: Preliminary Evaluation How many kilometers of coastline does our country have, and which offshore waters are it bordering? Our country has more than 18,000 kilometers of coastline and is bordered by four sea areas: the Bohai Sea, the Yellow Sea, the East China Sea, and the South China Sea. Which sea areas of our country span from north to south?

File Info

Update Time: 2024-11-18

This template belongs to Geography courseware Business Planet Edition Geography for Eighth Grade Volume 2 industry PPT template

Preview