Unit 9. Undersea world

How many parts of the ocean are there?
*
*
*
*
*
What are they?


There are 5 different parts:
Pacific Ocean: Thỏi Bỡnh Duong
Atlantic Ocean: D?i Tõy Duong
Indian Ocean: ?n D? Duong
Antarctic 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
Unit 9:
UNDERSEA WORLD
Lesson: Reading
vocabulary
vocabulary
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.
Gulf
Bay
Vịnh
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.
Submarine
Tàu ngầm
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.
Starfish
Con Sao Biển
Task 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 under the sea.
3. A ……… is a large area of sea that is
partly surrounded by land.
4. ……. is a term that refers to the
existence of different kinds of animals and plants
which make a balanced environment.
5. These scientists have collected different ….to
analyse for their experiment.
a. biodiversity b. oversized c. gulf d.challenges
e. Investigate f. samples g. tidy h. provide.
g
e
c
a
f
Task 2. Answer the questions
1. 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?
5. What are the three groups. of marine plants and animals?
6. What would happen if the sea biodiversity were not maintained?
 75% of the earth’s surface is covered by the seas and oceans
1. What percentage of the earth`s surface is covered by seas and oceans?
 By using modern devices
2. How do scientists now overcome the challenges of the depth?
 They help them to investigate the seabed and bring samples of the marine life back to the surface for further study
3. What can submarines do to help scientists know about the undersea world?
 We can know a wide range of information including water temperature, depth and the undersea population
4. What can we learn from the satellite photos?
 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
5. What are the three groups of marine plants and animals?
 The marine of life would be at stake if the sea biodiversity was not maintained
6. What would happen if the sea
biodiversity were not maintained?
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)…………………
three-quarters
mysterious
modern
discoveries
biodiversity
huge
plants and animals
closely connected
Checking vocabulary
- divide into (v) /di`vaid/
- gulf (n) /g?lf/ = bay (n) /bei/
- challenge (v) /`t?ổlind?/
mystery (n) /`mistri/
lie beneath the ocean /lai bi`ni:? `???n/
- submarine (n) /s?bm?`ri:n/
- seabed (n) /`si:`bed/
- investigate (v) /in`vestigeit/
chia ra, phân ra
vịnh
thách thức, thách đố
điều huyền bí
nằm dưới đại dương
tàu ngầm
đáy biển
Thám hiểm
Checking vocabulary
- marine (a) /m?`ri:n/
- precious (a) /`pre??s/
- tiny (a) /`taini/
- organism (n) /`?:g?nizm/
- oversized (a) /`ouv?saizd/
- biodiversity (n) /baioudai`v?:siti/

- be at stake (vp) /steik/
thuộc về biển
quý giá
nhỏ, bé
sinh vật
quá khổ, quá cở
hệ sinh thái, đa dạng sinh học
bị đe doạ
Homework
Learn by heart the new words
Answer the questions again.
Prepare the “ speaking part”
Thank you for your attention
Thank you for your attention