Transcript WATER - Educalab

WATER
THE STORY OF A DROP
HOW IMPORTANT IS WATER?
Water is essential for life, and it is present
everywhere:
- Water covers 70% of our planet
- 60%/70% of our body is water
WHERE IS WATER?
Think for a minute where you can find
water. It isn’t too difficult.
Here are some ideas:
• When you have a shower
• When you go to the toilet
• When you wash the dishes
• When you are thirsty
• When it rains
• In rivers and oceans
• In theme parks
• Our plants and animals need water
too
Water is so important that life can’t
exist without it
Where does water come from?
• In this unit you are going to learn:
- How rivers are formed
- How we get rain
- How we get water from rivers to take it to
our houses
- How we store and manipulate water
- How we use water
- How we can save water
SOME QUESTIONS ABOUT WATER
• Is the amount of water
we can use limited?
Yes, it is. Only one percent
is drinkable, and half of this
drinkable water is found below
the earth's surface
Consequence: we must save
water
• All the water we have on earth is all the water
we will ever have—we cannot make more. That
means it is a non-renewable resource.
How is that possible?
the water cycle has recycled the water supply for billions of
years. We use the same water that the dinosaurs used
But, if we are not careful with water, some day we might run out of clean,
fresh water.
• It is important to save
•
-
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water, but it is also
important to keep water
clean.
How does water get
dirty? Some ideas:
Pet waste contains
harmful bacteria that can
wash into rivers, streams
and lakes.
Using pesticides or
fertilizers in agriculture
Factories and refineries
emit polluting fluids that
wash into rivers and lakes
• To clean water, we have sewage treatment plants
• When it is clean, it can be used again at home,
in agriculture, in industry, etc. so the process
starts again.
Uf! It’s not easy being a drop of water. I travel a long way
to get to you, in rain water
through rivers and pipes
under bridges or in bottles.
Sometimes I take a rest in dams and oceans.
Sometimes I get frozen, sometimes I become vapor, but
it’s always fascinating. Come with me and find out more