I think the following is a small technology production for primary school students
1 Make a simple solar water heater
Use a large plastic box , black paper, transparent plastic film and water. Punch a small hole in the bottom of the plastic box, cover the box with clear plastic wrap, and place black paper on the bottom of the box.
2. Create a simple volcano model. Place small beads on top of the volcano, then invert the cup onto the playdough. Now you can see what the “volcano” looks like when it erupts.
3. Make a simple electric car
Use a small battery, some metal wires and two pencil leads. Connect one end of the two leads to the positive and negative terminals of the battery, then attach the other ends of the two leads together.
Can I make a solar water heater myself? How to make it work?
Solar water heater: 1. Materials: box (preferably iron box), small tin can (must be metal), foam, reflective board (you can use aluminum foil from cigarette boxes, mirrors, old CDs, etc.), adhesive tape, black paint, cellophane.
2. Boxes and small cans should be painted black (this can absorb more heat, as black can absorb light). Dig a hole in the foam (also painted black) just enough to insert vertically. the small box contains 3/5 (acts as thermal insulator to prevent heat dissipation), 2/5 is exposed outside to receive sunlight. Put the foam and the small box in the box, seal it with cellophane and make a support. frame behind the box so that the box can face the sun. Place it diagonally and install reflectors on the back, top, leftleft and right of the box. The reflectors underneath can be placed directly on the ground in front of the box (the box). the larger the reflectors, the better, as they can absorb more light and heat). The reflected light should be able to shine on the box or small tank so that the box and small tank can absorb more heat. is made.
Learn the lazy way: ask the teacher for science materials
How to make a simple solar water heater for primary school students
< p>You can make your own solar energy.
Prepare a large, thin-skinned plastic bucket (it's best to use a flat one, if you can't buy it, you can use a special plastic bag instead
Buy); black paint to paint it black, then turn it over or put it on the roof, drill a hole in the seam, the hole size is the size of a cointhis dime
Buy a plastic water; pipe, the thickness should be the same as the hole size, connect it and use a lit plastic rope to seal the hole;
Connect the plastic tube downwards and place it where you want; want to take a bath.
Make your own small solar water heater
Preparation materials: 1 cardboard, 1 piece of aluminum foil, foam, mirror , 1 glass test tube, brush writing, ink.
Production steps:
1. Cover the inside of the cardboard with a layer of foil. The function of aluminum foil is to absorb solar energy:
2. Place 1 The test tube filled with water is fixed on the aluminum foil with double-sided tape, and foam can be used on both sides to help secure it:
3. Attach a mirror to the center of the side wall of the box to reflect lightof the sun:
4. Use a brush dipped in ink to paint the tin foil, foam, etc. the black box, which is conducive to absorbing energy from the sun:
5. The final production is completed and placed in the sun:
How do elementary school students make a simple solar water heater?
Take a wooden box similar to a drawer, put a 4-5 cm thick foam board (or an old quilt) on the bottom and around it, and cover the wooden box with a piece of glass (or plastic). leaves). Place 1-2 water tanks inside, with a diameter of 15-20cm and a height of 60-100cm. They are made of galvanized sheets and filled with water. The exterior of the melter is painted black, with a water inlet inside. at the bottom and an exit at the top. The water inlet is connected to the house's hot water tap. There is an overflow opening on the top. When the water is full and overflowing, close thewater inlet tap. Such a simple solar water heater is made. Water temperatures can reach 60 degrees in summer and 45 degrees in winter.
Take a drink can and spray it with black paint. Put it in the sun, it is the simplest and most primitive solar water heater.
Method 1: Use a drink can and spray it with black paint. Placed under the sun, it is the simplest and most primitive solar water heater.
Method 2: 1. Fill a plastic bottle (preferably a beverage bottle) with an appropriate amount of water.
2. Prepare some mirrors.
3. Place mirrors around the plastic bottles and place them in the sun to heat the water using the reflection principle.
The solar water heater is a heater that converts solar energy into thermal energy, thereby transforming water at low temperatures. Heated to high temperatures tomeet people's use of hot water in life and production.