You know those agonising goals where the ball just trickles in? Getafe had one in the week against Barcelona. Ireland women's team against Ukraine in 2020 too.
This is also about trickling in. It is a fun experiment to get dirty water clean by trickling it through a home-made natural water filter.
What difference does it make?
Water we find underground has been filtered clean by the soil and rocks it has filtered down through. See how that works, and why it is so important to keep the soil free of pollution.
What do you need?
- A big plastic bottle (1.5l or more)
- Coffee filter (or a piece of cloth)
- Muddy or oily water
- Different kinds of:sand / coarse sand / gravel or pebbles / activated carbon (can find at a pet shop)
Step by step
Cut the bottle into two sections. The upper section should be a bit shorter than the bottom one.
Turn the upper part of the bottle upside down, neck down, and insert it in the lower part.
Fit the coffee filter or the piece of cloth in the "funnel".
If you have activated carbon, put it in first. Then add on a top of it layers of sand, then coarse sand, small pebbles and then bigger ones.
Pour muddy water slowly into the natural filter fitted in your homemade funnel. Make sure it doesn't overflow. See how clean the water becomes!
Need Help?
The more variety the better! But sand and pebbles are already good to start with!
You can find activated carbon in any pet shop because it is used in water filters for aquariums.
No! This is just to show how the different layers in the ground clean the water we use.
This is a nice trickler:
Ireland women's team had one (2:30).
This is the Barca v Getafe one, (0:50).
These are more bobbles than trickles, but still a bit trickly: here.