First of all, it is best to use a suction cup as a water container and add black paint to the water. A concave mirror is installed slightly below the bottom of the container to collect light, and a magnifying glass is installed at the top to collect heat. This is probably it:
Note: If you want to collect heat quickly, you can add a stand underneath to make it easier to aim at the sun.
How do elementary school students use simple materials to make a modern solar water heater
An iron bucket, clean the inside and paint it black on the outside
Place the iron bucket in a slightly higher place
Insert a plastic pipe into the iron bucket
Connect a faucet under the plastic pipe
p>Put Add water into the iron bucket
Cake it in the sun for half a day to a day
Turn on the tap and letz the water flows
Feel the temperature of the water with your hands
Be careful not to burn yourself.
Solar water heaters are mainly composed of three parts: a water storage tank, a vacuum collector tube or a flat plate collector and a bracket. Elementary school students can use a columnar air film like. water storage tank, using column air film or black pencil or wooden sticks are used as vacuum tubes, and wooden boards can be used as supports. Or use modeling clay to make a model of a solar water heater.
I hope this can help you, and I hope you will adopt it, thank you!