Any adult knows that at temperatures below 0 ° C water freezes and becomes solid, and at 100C boils and rises in the form of steam. For a child, everything is unknown, and therefore very interesting.
Sit down with your child and see what secrets is fraught with a simple container of water.
�Ideas for observation
- Pour into a glass with a spoonful of water, and let the kid looks at him sideways. He will see that there are "broken" spoon!
- Cut out of light cardboard a few bottles and put them on the table. One straight, the other at a small angle, and the third horizontally. Let the child draw the marker will look like the water in these bottles. Then pour the water in this bottle and check that the water level will always be horizontal).
- It is very interesting to observe the surface of the water. Molecules here to hold on to each other so strong that they form a thin elastic film. It can be seen, if you fill the Cup with water to the brim.
A few fun jobs for the young researcher:
- Is it possible to put something in a glass of water so that water is not spilled over the edge? (Yes, safety pins, but putting one
- Is it possible to make metal out of the water? (Yes, you have to take a needle and use a fork to gently place it on the surface of the water)
- Is it possible to make the swim a piece of chalk? (Yes, if rubbed on a fine grater and crumble over the surface of the water
Games ice
- Freeze the water using a variety of tins and containers, make colored ice. In the winter of these multi-colored "bricks" you can build castles and houses on the street.
Colored ice cubes we can draw: put them on a sheet of paper and wait until they melted, colored threads in this mixed up in random order. To draw hands, in the manufacture of ice make it "stick" from the matches or toothpicks.
- Try before freezing to throw in the water pieces of colored paper, fabric, threads, foils. It turns out very nicely. Another of the ice you can make decoration for Christmas trees to lower the water ribbons or ribbon so that when the freeze happened eyelet. On the same principle, you can make ice icon (presumably in the water English pin) or ice beads (connect molds thread).
- Sprinkle salt ice and see what happens.
- You can freeze different liquid: juice, milk, butter, etc. Compare as frozen normal and salt water.
- Freezing water increases its volume. Demonstrate this with a simple experiment: pour water into a tube cocktail, the ends will close up on clay. Put a tube of clay, and when the water cools, show it to your baby. One of the samples will bounce and from the tube will hang around the ice.
- Pour into a basin of water and let down the boat and a few pieces of ice. Explain to the child what is an iceberg, what are the dangers of collision with him.
- Arrange a competition "who will break the ice". Let the child decide where to put the bowl with ice: sun, in the shade, cover it or not.
The disappearance of water
Do an experiment: pour in a glass of water and mark the level, and then remove the glass on the night. Again check the water level and make a new mark. The water evaporates. For comparison, take the second Cup and cover it with foil. For example, this experiment can be explained to the child what happens to puddles.
The emergence of water from the air
The appearance of water "out of nowhere" is no less interesting for a child than her "escape" from a glass. We are talking about the condensation of the air. To demonstrate this phenomenon need to moist warm air came into contact with something cold. For example, you can put a glass with ice in a warm room.
The water cycle
Tell the child that the transformation of water (evaporation and condensation) occur continuously. This cycle can be demonstrated by showing boiling water under a transparent cover, or observing the formation of water droplets on plain cover, when raised above a pot of boiling water.
Mixing
Kids love to mix everything. The easiest way to mix clean water and paint. This can be done in transparent jars or resealable plastic bottles. Using bottles you can get more effects: it can be put on the table and to monitor the process of mixing colors, or vigorously shake, roll on the table, and so on, it can create a small vortex, rotating the bottle in one direction.
Instead of paint to water, you can throw crushed crayons, glitter, salt, sugar, milk, juice, coffee, tea, pepper, grated on a fine grater beets or carrots, flour, shampoo, soap, etc.
Separately it is necessary to say about the interaction of water and oil, they can conduct interesting experiments:
"Immiscible liquids". Take three transparent containers. First pour the colored water on the third volume. Then gently pour in the oil and finally add the alcohol. Will see what happens. Just pour water, oil and alcohol in the two remaining capacity. Add in a third capacity of about one teaspoon of funds for washing dishes. The last two tanks close the lid and shake. A few hours later compare the fluid in all three banks. This is quite a spectacular way to explain the results of which are quite simple: alcohol mixed with water, and the oil is not mixed either with water or with alcohol. While alcohol is lighter than oil. Adding means for washing the fat breaks up into droplets, which cannot be connected together.
"Immiscible substances and drop paint". Pour in a jar of water and top with a little oil. Then drop with a pipette or dust with a brush a few drops diluted with water paint. You will see that they are not mixed with oil, and take the form of small balls. Try a spoon to push the paint into the water.
"Painting with oil and water". Mix the paint of one color of water, and a paint of a different color with oil. Dip thick brush in colored water and apply an aqueous solution on a sheet of paper. Take a brush thinner and add a drop of oil with balls of paint water stains.
Sink - float
Try to drown in the water orange, smooth and crumpled piece of paper, a piece of clay in different shapes (ball, boat, etc), eggs (fresh and salt water).
Tricks with pressure
These experiments seem to be kids real magic.
"Inverted glass and a sheet of paper. Fill the glass with water to the brim, cover it with a sheet of paper, and holding his hand to gently turn the Cup. Remove your hand. The water from the Cup will not leak.
"Dry napkin in a glass". Crumpled napkin and place it on the bottom of the glass. Fill a large bowl with water and immerse the inverted glass cloth on the inside. The cloth must remain dry.
"Submarine". Put a glass bowl filled with water, and turn it upside down. Immerse in a bowl curved tube so that one end was an inverted Cup, and the other was out of the water. Blow into the tube. The Cup will fill with air and float to the top.
Source:
Razvivashki
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