Not only schoolchildren, but even adults sometimes wonder: why do we need physics? This topic is especially relevant for parents of students who once received an education that is far from physics and technology.
But how to help the student? In addition, teachers can ask an essay on the house in which they need to describe their thoughts about the need to study science. Of course, it is better to entrust this topic to eleventh graders who have a complete understanding of the subject.
What is physics?
In simple terms, physics is a science of nature. Of course, at present, physics is moving more and more away from it, delving into the technosphere. Nevertheless, the subject is closely connected not only with our planet, but also with space.
So why do we need physics? Its task is to understand how certain phenomena occur, why certain processes are formed. It is also desirable to strive to create special calculations that would help to predict certain events. For example, how did Isaac Newton discover the law of gravity? He studied the subject, falling from top to bottom, observed mechanical phenomena. Then created formulas that really work.
What sections does physics have
The subject has several sections that are generalized or in-depth studied at school:
- Mechanics;
- vibrations and waves;
- thermodynamics;
- optics;
- electricity;
- the quantum physics;
- Molecular physics;
- nuclear physics.
Each section has subsections that examine various processes in detail. If you do not just study theory, paragraphs and lectures, but learn to imagine, experiment with what is being discussed, then science will seem very interesting, and you will understand why physics is needed. Complex sciences that cannot be applied in practice, such as atomic and nuclear physics, can be considered in another way: to read interesting articles from popular science journals, to watch documentaries about this area.
How an item helps in everyday life
In the essay “Why physics is needed”, it is recommended to give examples, if they are appropriate. Suppose, if you describe why you need to study mechanics, you should mention cases from everyday life. Such an example would be a regular car trip: from the village to the city you need to drive along the free highway in 30 minutes. The distance is about 60 kilometers. Of course, we need to know at what speed it is better to move along the road, preferably with a margin of time.
You can also give an example of construction. Suppose, when building a house, you need to correctly calculate the strength. You can not choose flimsy material. The student can conduct another experiment to understand why physics is needed, for example, take a long board, put chairs at the ends. The board will be located on the backs of the furniture. Next, load the center of the board with bricks. The board will bend. As the distance between the chairs decreases, the deflection will be less. Accordingly, a person receives food for thought.
When cooking dinner or lunch, the hostess often encounters physical phenomena: heat, electricity, mechanical work. To understand what to do right, you need to understand the laws of nature. Often experience teaches a lot. And physics is the science of experience, observation.
Professions and specialties related to physics
But why do you need to study physics for someone who graduates from school? Of course, those who enter a university or college in the humanities, the subject is practically not needed. But in so many areas, science is required. Let's consider in which:
- geology;
- transport;
- power supply;
- electrical engineering and devices;
- the medicine;
- astronomy;
- construction and architecture;
- heat supply;
- gas supply;
- water supply and so on.
For example, even the train driver needs to know this science in order to understand how the locomotive works; the builder must be able to design strong and durable buildings.
Programmers, IT specialists also need to know physics in order to understand how electronics and office equipment work. In addition, they need to create realistic objects for programs, applications.
In medicine, physics is used almost everywhere: radiography, ultrasound, dental equipment, laser therapy.
What sciences is connected
Physics is very closely interconnected with mathematics, because when solving problems, you need to be able to transform various formulas, carry out calculations and build graphs. You can add this idea to the essay “Why do we need to study physics”, if we are talking about computing.
Also, this science is connected with geography in order to understand natural phenomena, to be able to analyze future events, weather.
Biology and chemistry are also related to physics. For example, no living cell can exist without gravity, air. Also, living cells must move in space.
How to write an essay to a 7th grade student
And now let's talk about what a seventh grader who has partially studied some sections of physics can write. For example, you can write about the same gravity or give an example with a measurement of the distance that he traveled from one point to another in order to calculate the speed of his walk. The pupil of the 7th grade can supplement the essay “Why physics is needed” with various experiments that were conducted in the lessons.
As you can see, the creative work can be written quite interesting. In addition, she develops thinking, gives new ideas, arouses curiosity for one of the most important sciences. Indeed, in the future, physics can help in any life circumstances: in everyday life, when choosing a profession, when applying for a good job, during outdoor recreation.