UNIT 9: UNDERSEA WORLD

A. READING

Before you read

Work with a partner. Look at map and give the Vietnamese names for the  oceans on the map.
Work with a partner: Look at the pictures below Can you name the sea animal in each picture? The first letter of the word has been given to help you.

While you read

Read the text and do the tasks that follow.

There is only one ocean It is divided into five sections: Atlantic Pacific Arctic Indian Ocean duowng Antarctic ocean. There are also many other smaller sea bay and gulf forming part of the ocean. All covers 75 percent of Earth's surface. Over the centuries, human beings are challenged by the mysterious ocean beneath. But scientists have now overcome many challenges of depth by using modern means. They sent submarines to survey the ocean floor and bring the pool of life specimens return to the ground further research. The satellite provides a variety of information. Including water temperature, depth and the inhabitants of the sea. If modern technology did not exist, we never have such valuable information.

Marine fauna is divided into three main groups. Some of us live or reliance ocean floor like starfish. Some of the animals can swim like fish and sharks move independently of the water while the other animals are tiny organisms are carried away as waters jellyfish. The marine animals and plants, whether small or oversized. All contribute to its biological diversity. Unless diversity: conservation biology is, the marine life is in danger.

Task 1. The words in thr box all appear in the passage. Fill in each blank with one of them. There are more words than needed.

gulf; oversized; biodiversity; challenges; investigate; tiny samples; provide

1. Some plants and animals are referred to as ....................................... organisms because they are extremely small.

2. Thanks to modern technology, scientists have been able to .................... the life of plants and animals that live inder the sea.

3. A ......................... is a large area pf sea that is partly surrounded by land.

4. ..................................... is a term that refers to the existence of different.

5. These scientists have collected different ....................... analyse for their experiment.

Task 2. Read the passage again and then answer the following questions. 

1. What percentage of the earth's surface is covered bu seas and oceans?
2.How do scientists now overcome the challenges of the depth?
3.What can submarines do to help scientists know about the undersea world?
4.What can we learn from the satellite photos?
5.What are the three groups of marine plants and animal?
6.What would happen if the sea biodiversity were not maintained?

After you read 

Work in pairs. Complete the summary of the reading passage by filling in each blank with a word or phrase given in the hox below.

three-quarters                mysterious              modern         discoveries               closely connected  biodiversity                     huge                       plants and animals                   closely connected

Tough covering (1)....................... of the earth's surface the ocean has remained (2)................................ to us until recently. With (3)............................ technology we have now made important  (4)........................... about the (5) .......................... of marine life. We have learnt that whether tiny or (6) ..................................., all the (7).............................. of the sea are (8)............................... .

B. SPEAKING 

Task 1. Below are some actions that would be taken to protect our oceans.

 

Task 2. Work in groups. Below are some threats to the health of the oceans. Discuss the consequences that might occur and offer some possible solutions.

1. Beaches are filled with plastic bags, pieces of glass and cigarette butts. 
2. Whales and sharks are still hunted for food, medicine and other products.
3. Explosives are used to catch fish and other sea animals.

4. Oil is spilled from tankers. 

Example:

A: Beaches are filled with plastic bags, pieces of glass and cigarette butts. This makes the sea polluted and endanger sea plants and animals.
B: We should clean beaches and tell other people not to litter them.

Task 3. Report to the class what your group has discussed.

C.LISTENING 

Before you listen

Work in pairs. Discuss the following questions.

1.Do you think whales are fish? why(not)? No. 
2. Why do people keep hunting whales?
Listen and repeat.

mammal                 blue whale                 atlantic                 pacific                 krill                 whaling                 migrate                conervation       

While you listen

Task 1. Listen to some information about whales and dccide whether the following statements are true(T) or lalse(F).

Task 2. Listen again and then answer the following questions.

1. What  is the lengtj and

After you listen

work in groups. Talk about whales, using the following cues.
their length and weight 

their feeding grounds and food the reasons for protecting whales