Unit 9. Undersea world

Welcome to class
10 E2 & 10 G2
We are under
the sea
to our class
Nam Băng Dương
Thái Bình Dương
Đại Tây Dương
Bắc Băng Dương
Bắc Mỹ
Châu âu
Châu Phi
ấn Độ Dương
Nam Mỹ
Châu á
úc
1. Before you read
Seals
Hải Cẩu
2. Vocabulary
Jellyfish
Con Sứa
Sharks
Cá Mập
Sperm Whale
Cá Nhà Táng
Sperm Whale
Turtle
Rùa Biển
Turtles
Dolphins
Cá Heo
Whale
Cá Voi
Gulf
Bay
Vịnh
Submarine
Tàu Ngầm
Starfish
Con Sao Biển
Krill
Loài Nhuyễn Thể
3. While you read
There is only one ocean. It’s divided into five different parts: the
Pacific, Atlantic,Indian, Antartic, and Arctic Ocean. There are also
many other smaller seas, gulf and bays which form part of them.
Altogether they cover 75 percent of the earth’s surface. For centuries,
people have 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
exit, we would never have such precious information.
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 like the jellyfish. Plants and animals
of the sea, however small or oversized, all contribute to its biodiversity. Unless this biodiversity were maintained, marine life would be at stake.
4. Task 1
Some plants and animals are referred to as ….
organisms because they are extremely small.
2. Thank 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 ….
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
5. Task 2:
Answer the questions
a.What percentage of the
earth?s surface is covered
by seas and oceans?
75 percent of the earth?s surface.
b. How do scientists now
overcome the challenges
of the depth?
By using modern devices.
c. What can submarines do to help
scientists know about the
undersea world?
They investigate the seabed and bring samples of the marine life back to the surface for further
study.
d. What can we learn from
the satellite photos?
We can know a wide range of information, including water temperature, depth and the undersea populations.
e. What are the three groups of
marine plants and animals?
They are those that live on or
depend on the bottom like starfish,
those that move independently of
water currents and those that are
carried alone by the currents.
f. What would happen if the sea
biodiversity were not maintained?
The marine life would be at stake
if the sea biodiversity was
not maintained.
Luckily
6. Fill into the gaps a suitable
word or phrase
Though covering ???........... of the
earth?s surface, the ocean has
remained ?????. to us until recently. With ???? technology
we have now made important ???? about the ????.
of marine life. We have learnt that whether tiny or ??, all
the ????................. of the sea are ???? ???.
three-quarters
mysterious
modern
discoveries
biodiversity
huge
plants and animals
closely connected
7. Homework:
Learn by heart new words
Read and summary the text.