Unit 9. Undersea world

Unit 9: Undersea World
Lesson 1: Reading
Before you read
Look at the map and answer the questions
How many parts of the ocean are there?
What are they ?
2. How many continents are there?
What are they?
3. Can you name some sea animals you know ?


1. How many parts of the ocean are there?
There are 5 different parts
Pacific Ocean ,
Atlantic Ocean ,
Indian Ocean ,
Southern Ocean (Antartic Ocean) and
Arctic Ocean.

2.How many continents are there?

There are 5 continents

(Asia, Africa, America, Australia ,Europe)
Can you name the sea animal in each picture? The first letter of the word has been given to help you.
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………………
Can you name the sea animal in each picture? The first letter of the word has been given to help you.
Seal
Can you name the sea animal in each picture? The first letter of the word has been given to help you.
Seal Jellyfish
Can you name the sea animal in each picture? The first letter of the word has been given to help you
Seal Jellyfish Turtle
Can you name the sea animal in each picture? The first letter of the word has been given to help you
Seal Jellyfish Turtle Shark

Shark
Dolphin
Seal
Jellyfish
Turtle
Pre-teaching Vocabulary
-Bay (n)
- Mystery (n): a thing of which the cause or origin is unknown or impossible to explain
- Beneath( prep): under sb/st
- Submarine (n): Tµu ngÇm
- Submarine ( a): D­íi mÆt biÓn
- Fall into (v): to be able to divided into st
- Water current (n)
- Organism (n) : a living being
- Be at stake : be at risk
Vocabulary
biodiversity
submarine
Water current
* 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.
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.

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
While you read
Read the text and do Task 1 in pairs
Task 1: Fill each blank with one of the word given ( gulf, oversized, biodiversity, challenges, investigate, tiny, samples, provide)

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 the 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.
tiny
investigate
gulf
Biodiversity
samples
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?

1. 75% of the earth’s surface is covered by the seas and oceans
2. By using modern devices
3. They help them to investigate the sea bed and bring samples of the marine life back to the surface for further study
4. We can know a wide range of information including water temperature, depth and the undersea population
5. 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
6. The marine of life would be at stake if the sea biodiversity was not maintained
After you read
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
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”