Unit 9. Undersea world

welcome to our lesson
welcome to our lesson
welcome to our lesson
A. READING
Unit 9: Undersea World
Unit 9: Undersea World
Teacher: La Thi Thuan
Tra Linh High School
How many parts of the ocean are there?
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*
*
*
*
What are they?
Th¸i B×nh d­¬ng
Đại Tây Dương
ấn Độ Dương
Nam Băng Dương
Bắc Băng Dương


There are 5 different parts:
Pacific Ocean: Thỏi Bỡnh Duong
Atlantic Ocean: D?i Tõy Duong
Indian Ocean: ?n D? Duong
Antartic Ocean: Nam Bang Duong
Arctic Ocean: B?c Bang Duong
How many parts of the ocean are there?
How many parts of the ocean are there?
Can you name the sea animal in each picture?
Can you name the sea animal in each picture?
The first letter of the word has been given to help you.
S .
J ...
T ..
S ..
Seal
Jellyfish
Turtle
Shark
vocabulary
vocabulary
Dolphin
Dolphin
Shark
Seal
Seal
Seal
Jellyfish
Starfish
Starfish
Starfish
Turtle
Sperm whale
Whale
Whale
Sperm whale
Submarine
Submarine
Read the text and do the tasks that follow
There is only one ocean. It is divided into five different parts: the Pacific, Atlantic, Indian, Antarctic, and Arctic Oceans. There are also many other smaller seas, gulfs and bays which form part of them. Altogether they cover 75 percent of the earth’s surface. For centuries, people have been challenged by the mysteries that lie beneath the ocean.
However, today’s scientists have overcome many of the challenges of the depth by using modern devices. They send submarines to investigate the seabed and bring samples of marine life back to the surface for further study. Satellite photographs provide a wide range of information, including water temperature, depth and the undersea populations. If modern technology did not exist, we would never have such precious information.
Read the text and do the tasks that follow (Conti…)
Marine plants and animals fall into three major groups. Some of them live on or depend on the bottom like the starfish. Some are swimming animals such as fishes and sharks that move independently of water currents while others are tiny organisms that are carried along by the currents like the jellyfish. Plants and animals of the sea, however small or oversized, all contribute to its biodiversity were maintained,marine life would be at stake.
Read the text and do the tasks that follow (Conti…)

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

Some plants and animals are referred to as…... organisms because they are extremely small.
Thanks to modern technology, scientists have been able to …..…….... . the life of plants and animals that live under the sea.
A …….. Is a large area of sea that is partly surrounded by land
……………… is a term that refers to the existence of different kinds of animals and plants which make a balanced environment.
These scientists have collected different ..…… to analyze for their experiment.
gulf
oversized
biodiversity
challenges
investigate
tiny
samples
provide
Task 2. Answer the questions
What percentage of the earth’s surface is covered by seas and oceans?

2. How do scientists now overcome the challenges of the depth?

3. What can submarine do to help scientists know about the undersea world?


4. What can we learn from the satellite photos?

- 75% of the earth’s surface is covered by the seas and oceans
- By using modern devices
- They help them to investigate the seabed and bring samples of the marine life back to the surface for further study
- We can know a wide range of information including water temperature, depth and the undersea population
5. What are the three groups. of marine plants and animals?




6. What would happen if the sea biodiversity were not maintained?
Some of them live on or depend on the bottom (like the starfish.)
Some are swimming animals (fishes, sharks that move independently of water current)
Others are tiny organisms
The marine of life would be at stake if the sea biodiversity was not maintained
After you read
Work in pairs. Complete the summary of the reading passage by filling each blank with a word or phrase given in the box
plants and animals
discoveries
huge
closely connected
modern
three-quarters
mysterious
biodiversity
Though 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)…………………
Homework
1. Learn by heart the new words
2. Summarize the main points of the text
3. Do exercises in the workbook ( unit 9 –reading)
4. Prepare the “ speaking part”
Thank you for your attention
Thank you for your attention