English Exercises > Other printables exercises

The Ozone Layer. (Author-Bouabdellah)

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Technicum Si-Tarek of Relizane

Second Year Pupils - Scientific Streams

First Term Written Test N 01

The Ozone Hole

Before doing the tasks watch the video and consider what you see.

Part One: Comprehension
The ozone layer is getting thinner or actually being destroyed, creating the so-called ozone hole.
The ozone hole over the Antarctic increases every year; this is particularly dangerous because of the lack of protection against ultraviolet rays, which cause sunburn and even skin cancer.
The gases used in aerosols, refrigerator liquids and plastic boxes for junk food*, which are called CFCs, are responsible for the destruction of the ozone layer. But jet planes are also responsible. As a matter of fact, jet planes usually fly above 10,000 metres, in the top level of the atmosphere, where ozone (O3) exists. As jet engines consume oxygen, in the form of either O2 or O3 they also contribute to the growth of the ozone hole.
*junk food Food that is not very healthy, but that is ready to eat

A. Find in the text words close in meaning to the following.

1. in reality =

2. opening =

3. grows =

4. motors =

B.Find in the text words opposite in meaning to the following.

1. thicker =/=

2. safe =/=

3. below =/=

4. diminution =/=

C. Read the passage then answer the questions.

1. What is happening to the ozone layer?

2. Why is there a hole in the ozone layer?

because of

3. Are ultraviolet rays harmful to living beings? Justify.

because the can .

4. Why are jet planes more dangerous for the ozone layer?

because they , where .

Part Two: Mastery of Language.

D. Rewrite the sentences into the passive. Give the agent only when necessary.

1. The milkman brings the milk to my door but the postman leaves the letters in the hall.

2. Normally dustmen sweep this street every day, but nobody swept it last week.

E. Match the following clauses to make 4 meaningful conditional sentences.

1. He will certainly win

2. He wont go to work

3. He would buy that vase

4. He wouldnt have missed the meeting

F. SOS activity: Writing. (This is an extra activity you may not do it. But you can do it on a double sheet of paper and had it to your teacher for appreciation)

Have you ever planted a tree?

If yes where, when and what for how did you feel?
If no, why?

"Poor is the pupil who does not surpass his master."

Leonardo da Vinci