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6d Save our planet

1 Warm-up  2 Read 

Answer the following A. What are the causes
questions. of water pollution?
Listen, read
• What kind of environmental and check your
problems do cities have?
• What can people do to help answers.
protect the environment?

are biologically dead. © MM Publications
Experiment

You will need:
W a t e r i s e s s e nt i a l f o r l i f e . Another main cause of water • a glass of water (half full)
Water is essential for life.
Without it, life on Earth pollution is oil spills. Oil spills • a few drops of car engine oil
would not exist. However, are caused by leaks in ships • some cotton wool
although we know this for a or by accidents involving oil • some washing-up liquid
fact, we keep polluting the tankers. Thousands of tons
water on our planet. of oil spread over the surface 1. Rub the unpolluted water
One of the main causes of of the sea, and as a result between your fingers.
Remember what this feels like.
water pollution is waste destroy marine life, life on 2. Add a few drops of car engine
which is pumped into rivers, beaches, kill sea birds, etc. oil to the water. This is your
lakes and seas. The waste A lot of measures have been ‘water pollution’.
comes from homes, factories taken by governments to stop 3. Use the cotton wool to try and
and farms. Some of this waste water pollution. For example, get the oil out of the water. This
can harm people, animals the people responsible are is your ‘clean-up’ operation.
and plants while other waste fined. However, the problem 4. Rub the water between your
causes disease. Scientists is very serious and something fingers again. Notice that the
predict that most of the must be done to prevent water is still oily. Not all the oil
world’s rivers will be polluted water pollution. Cleaning can be removed. Just imagine
what it’s like in the sea with
in twenty years’ time and up rivers or oil spills can be waves!
they say that some rivers are extremely difficult, expensive 5. Add washing-up liquid until the
already so polluted that they and time-consuming. water doesn’t feel oily. You will
need to add quite a lot! Now
the water isn’t very oily but
B. Read the text again and answer the questions.
it’s full of soap, which is also
1. How does waste get into rivers? harmful.
2. Why is this waste dangerous?
3. What do scientists predict? What did you learn?
4. What causes oil spills? it up afterwards.
5. How do oil spills harm the environment? pollution than to try and clean
6. Why is it better to prevent water pollution than to clean it up? It’s much better to prevent

C. Read the experiment again and tick the correct pictures.

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