1. IF THE EARTH HAS ALWAYS GOT THE SAME
AMOUNT OF WATER AND IT ALWAYS FOLLOWS
THE SAME CYCLE, WHY SHOULD WE SAVE IT?
ALEX ALVAREZ
FERRAN FAJULA
LLUC ZARZA
LLUÍS BIGAS

2. WATER DISTRIBUTION
• In the Earth, the water covers the 79% of the ground of the
Earth. Only the 3% of the water is freshwater and the 97% is
saltwater.
• We only use the 1% of the water.
Water distribution
salted
fresh water
fresh water
used

3. WATER DISTRIBUTION
• From a 3% of the freshwater , the 2% is for the underground
flow and glaciers.

4. WATER POLLUTION
The main causes of the pollution of the water are:
• Home causes: the water for the personal cleaning.
• The water is polluted because of fertilizers and pesticides.
• Industrial causes: the water is polluted because of chimical
products and metalic materials.

5. INVESTIGATION 1
• Investigation 1: We made ​a mount to hold the burette
then, we filled the beaker of water, and I emptied the water in
the burette. Then I put the glass under the burette and have
chosen the appropriate level brewer, once we have done we
change the glass jar to the beaker and let the burette release
water for five minutes. Once we have completed the process
water in a small test tube and look at how much water there.
The water has been in this test is that it has spent

6. INVESTYIGATION 2
• First we calculated the weight of the beaker
glass with out water and sand, then we put
100 ml of water .Then we take a bottle and
we cut its bottom, which is the opposite of the
cap, and stir in 100 ml of water along with
sand (earth).

7. WE HOPE THAT TOU ENJOEY IT