Erasmus+ students project tasks

1. Researching water
Task ? in Erasmus+ - project

2. In our research we
compare four
different kinds of
water
1. Tap water
2. Lake water from central Finland
3. River water from capital area
4. Sea water from Baltic Sea

3. In this research you
need:
Clear plastic/glass cups
White paper and pen
Indicator paper for pH-
tests

4. 1. Smell
Smell all of your water samples
How does it smell?
How strong is the smell?
Find out what are the reasons for smell (
eutrophication, salty/no salt etc, concentration of
oxygen, soil)

5. 2. Color
Place your water cup
above the white paper.
Look at the paper through
water.

6. What is the color of water?
Is the color light or dark?
Find out what are the reasons for different
color? (humus)

7. 3. The clarity
Draw a black cross
(0,5cm*0,5cm) on white
paper.
Place your water cup
above the cross.

8. Clarity of water?
What affects the clarity of water?

9. 4. Acid
Hold indicator paper in
water.
Compare the color of
your paper to colors in
packet.

10. What are the reasons for different pH?