Most people, remembering their school years, are sure that physics is a very boring subject. The course includes many tasks and formulas that will not be useful to anyone in later life. On the one hand, these statements are true, but, like any subject, physics has the other side of the coin. Only not everyone discovers it for themselves.
A lot depends on the teacher
Perhaps our education system is to blame for this, or maybe it's all about the teacher, who thinks only about the need to reprimand the material approved from above, and does not seek to interest his students. Most of the time it's his fault. However, if the children are lucky, and the lesson will be taught by a teacher who loves his subject himself, then he will be able not only to interest the students, but also help them discover something new. As a result, it will lead to the fact that children will begin to attend such classes with pleasure. Of course, formulas are an integral part of this academic subject, from thisnowhere to go. But there are also positive aspects. Experiments are of particular interest to students. Here we will talk about this in more detail. We will look at some fun physics experiments that you can do with your child. It should be interesting not only to him, but also to you. It is likely that with the help of such activities you will instill in your child a genuine interest in learning, and "boring" physics will become his favorite subject. It is not difficult to conduct experiments at home, for this you will need very few attributes, the main thing is that there is a desire. And maybe then you can replace your child's school teacher.
Let's look at some interesting physics experiments for little ones, because you need to start small.
Paper fish
To conduct this experiment, we need to cut out a small fish from thick paper (you can use cardboard), the length of which should be 30-50 mm. We make a round hole in the middle with a diameter of about 10-15 mm. Next, from the side of the tail, we cut a narrow channel (width 3-4 mm) to a round hole. Then we pour water into the basin and carefully place our fish there so that one plane lies on the water, and the second remains dry. Now you need to drip oil into the round hole (you can use an oiler from a sewing machine or a bicycle). The oil, seeking to spill over the surface of the water, will flow through the cut channel, and the fish, under the action of the oil flowing back, will swim forward.
Elephant and Pug
Let's continue to conduct entertaining experiments in physics with your child. We suggest that you introduce your baby to the concept of a lever and how it helps to facilitate a person’s work. For example, tell us that you can easily lift a heavy wardrobe or sofa with it. And for clarity, show an elementary experiment in physics using a lever. To do this, we need a ruler, a pencil and a couple of small toys, but always of different weights (that's why we called this experiment "Elephant and Pug"). We fasten our Elephant and Pug to different ends of the ruler using plasticine, double-sided tape or ordinary thread (we just tie the toys). Now, if you put the ruler with the middle part on the pencil, then, of course, the elephant will pull, because it is heavier. But if you shift the pencil towards the elephant, then Pug will easily outweigh it. This is the principle of leverage. The ruler (lever) rests on the pencil - this place is the fulcrum. Next, the child should be told that this principle is used everywhere, it is the basis for the operation of a crane, a swing, and even scissors.
Home experiment in physics with inertia
We need a can of water and a household net. It will not be a secret for anyone that if you turn an open jar over, the water will pour out of it. Let's try? Of course, for this it is better to go outside. We put the jar in the grid and begin to smoothly swing it, gradually increasing the amplitude, and as a result we make a full turn - one, two, three, and so on. Waterdoes not spill out. Interesting? And now let's make the water pour up. To do this, take a tin can and make a hole in the bottom. We put it in the grid, fill it with water and begin to rotate. A stream shoots out of the hole. When the can is in the lower position, this does not surprise anyone, but when it flies up, the fountain continues to beat in the same direction, and not a drop from the neck. That's it. All this can explain the principle of inertia. When the bank rotates, it tends to fly straight, but the grid does not let it go and makes it describe circles. Water also tends to fly by inertia, and in the case when we made a hole in the bottom, nothing prevents it from breaking out and moving in a straight line.
Surprise box
Now consider experiments in physics with a shift in the center of mass. You need to put a matchbox on the edge of the table and move it slowly. The moment it passes its middle mark, a fall will occur. That is, the mass of the part extended beyond the edge of the tabletop will exceed the weight of the remaining one, and the boxes will tip over. Now let's shift the center of mass, for example, put a metal nut inside (as close to the edge as possible). It remains to place the boxes in such a way that a small part of it remains on the table, and a large one hangs in the air. The fall will not happen. The essence of this experiment is that the entire mass is above the fulcrum. This principle is also used throughout. It is thanks to him that furniture, monuments, transport, cranes and much more are in a stable position. By the way, the children's toy Roly-Vstanka is also built on the principle of shifting the center of mass.
So, let's continue to consider interesting experiments in physics, but move on to the next stage - for sixth grade students.
Water carousel
We need an empty tin can, a hammer, a nail, a rope. We pierce a hole in the side wall at the very bottom with a nail and a hammer. Next, without pulling the nail out of the hole, bend it to the side. It is necessary that the hole be oblique. We repeat the procedure on the second side of the can - you need to make sure that the holes are opposite each other, but the nails are bent in different directions. We punch two more holes in the upper part of the vessel, we pass the ends of a rope or a thick thread through them. We hang the container and fill it with water. Two oblique fountains will start to beat from the lower holes, and the can will begin to rotate in the opposite direction. Space rockets work on this principle - the flame from the engine nozzles hits in one direction, and the rocket flies in the other.
Experiments in physics - Grade 7
Let's do an experiment with mass density and find out how you can make an egg float. Experiments in physics with different densities are best done on the example of fresh and s alt water. Take a jar filled with hot water. We put an egg in it, and it immediately sinks. Next, add s alt to the water and stir. The egg begins to float, and the more s alt, the higher it will rise. This is because s alt water has a higher density than fresh water. So, everyone knows that in the Dead Sea (its water is the most s alty) it is almost impossible to drown. As you can see, experiments in physics can significantly increase the horizons of your child.
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Balloon and plastic bottle
Seventh grade students begin to study atmospheric pressure and its effect on the objects around us. To reveal this topic more deeply, it is better to conduct appropriate experiments in physics. Atmospheric pressure affects us, although it remains invisible. Let's take an example with a balloon. Each of us can inflate it. Then we will put it in a plastic bottle, put the edges on the neck and fix it. Thus, air can only enter the ball, and the bottle becomes a sealed vessel. Now let's try to inflate the balloon. We will not succeed, since the atmospheric pressure in the bottle will not allow us to do this. When we blow, the balloon begins to displace the air in the vessel. And since our bottle is airtight, it has nowhere to go, and it begins to shrink, thereby becoming much denser than the air in the ball. Accordingly, the system is leveled, and it is impossible to inflate the balloon. Now we will make a hole in the bottom and try to inflate the balloon. In this case, there is no resistance, the displaced air leaves the bottle - atmospheric pressure equalizes.
Conclusion
As you can see, experiments in physics are not at all complicated and quite interesting. Try to interest your child - and studying for him will be completely different, he will begin to attend classes with pleasure, which will eventually affect himacademic achievement.
