Unit 9. Undersea world

welcome to our class
Seal
Jellyfish
Shark
Turtle
1
2
3
4
Unit 9
Undersea world
Lesson 1: Reading
Sounthern Ocean( Antarctic Ocean)
1. Pacific Ocean
2. Atlantic Ocean
3.Indian Ocean
5.Arctic Ocean
4.Antarctic Ocean
Thái Bình Dương
Đại Tây Dương
ấn Độ Dương
Bắc Băng Dương
Nam Băng Dương
The names of the oceans
New words
3. beneath (prep) [bi`ni:θ]
4. submarine (n) [,sʌbmə`ri:n]
5. marine life (n) [mə`ri:n] [laif]

6. water current (n) [`wɔ:tə] [`kʌrənt]

7. organism (n) [`ɔ:gənizm]
8. at stake [steik]
1. bay (n) [bei]
2. mystery (n) [`mistəri]
vịnh
bí ẩn
dưới
tàu ngầm
cuộc sống dưới biển
dòng nước
sinh vật
bị đe doạ
Read the passage and do the task 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 may 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
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. Unless this biodiversity were maintained, marine life would be at stake.
Task 1
The words in the box all appear in the passage. Fill 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 party 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.
tiny
investigate
gulf..
Biodiversity
samples
Task 2
Answer these questions
Lucky number
75% of the earth’s surface
1. What percentage of the earth’s surface is covered by seas and oceans?
1
2. How do scientists now overcome the challenges of the depth?
By using modern devices
3. 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
4. What can we learn from the satellite photos?
We can know a wide range of information, including water temperature, depth and the undersea populations
5. What are the three groups of marine plants and animals?
They are those that live on or depend on the bottom like the starfish, those that move independently of water currents and those that are carried along by the currents
6. What would happen if the sea biodiversity were not maintained?
The marine life would be at stake 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 below
Despite 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
Despite covering (1) three- quarters of the earth’s surface, the ocean has remained (2)mysterious to us until recently. With (3) modern technology we have now made important(4)discoveries about the (5) biodiversity of marine life. We have learnt that whether tiny or (6) huge, all the (7)plants and animals of the sea are (8) closely connected
Home work
- Learn by heart all the new words
- Write a short paragraph within 100 words about undersea world. Tell me what we should do to protect marine plants and animals
- Study part B - speaking
Thanks for your attention!