1.
In what state of matter is the water in rivers, lakes, and oceans
mainly found?
a) Solid (in the form of ice).
b) Liquid.
c) Gas (in the form of vapor).
d) It has no state.
2. Which of these options is the main cause of pollution in
rivers and seas?
a) Raining too much.
b) Animals drinking water.
c) The dumping of plastics, trash, and human chemicals.
d) Ocean waves stirring up the sand on the seabed.
3. Why is it so important to save water at home and at school
if the planet is covered in water?
a) Because the salt water in the oceans cannot be drunk directly
and the fresh water available to us is very scarce.
b) Because if we use water, the clouds will run out of rain
forever.
c) Because water costs a lot of money and has to be bought in
bottles.
d) It is not important to save water because it never runs out.
4. What happens to water in nature when it gets very hot?
a) It freezes and falls as hail.
b) It evaporates and rises to the sky to form clouds.
c) It disappears forever and never comes back.
d) It turns into oil.
5. If you see a tap dripping constantly in the school yard,
what should you do?
a) Leave it alone, after all, it's only a few drops.
b) Put a cup underneath to drink later.
c) Inform a teacher or the caretaker so they can fix it as soon
as possible and avoid wasting water.
d) Try to break it so the water comes out faster.
6. Which of these products pollutes water the most if we throw
it down the toilet or the sink drain?
a) Finely chopped banana peels.
b) Used cooking oil or wet wipes.
c) Clean shower water.
d) Dry leaves from plants.
7. If we want to water the plants in the school garden in a
sustainable and environmentally friendly way, what type of water
should we ideally use?
a) Direct seawater, since the salinity helps roots grow stronger.
Besides, there is plenty of salt water.
b) Tap water from the public supply, because it is the only kind
that cleans impurities from the soil.
c) Previously collected rainwater or reused water (such as
leftover water from washing vegetables), avoiding the waste of
treated drinking water.
d) Only bottled mineral water to ensure the nutrients are free of
germs.
8. What can happen if we throw plastics and other waste into
the sea?
a) Nothing, because the salt breaks them down quickly.
b) Animals can get poisoned by swallowing them or get trapped in
them.
c) No problem, because the waves carry them to the bottom where
they disappear.
d) Nothing, garbage collection boats take care of picking them up
every day.
9. When you brush your teeth or wash your hands at home, what
do you usually do with the tap?
a) I leave it running the whole time while I soap up or brush.
b) I turn it off while I brush or soap up and only open it to
rinse.
c) I don't pay attention to the tap, I leave it however it is.
d) I let it run a little bit so the water comes out fresher.
10. What do you normally do with your waste (plastic bottles,
wrappers) when you go to the beach, the countryside, or the park?
a) I leave them hidden behind a bush or in the sand so they can't
be seen. That way they don't bother anyone.
b) I throw them on the ground because cleaning staff already pick
them up.
c) I keep them in my backpack or throw them into the
corresponding bin or recycling container.
d) I throw them into the water so the currents carry them away.
