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Прочитайте текст и выполните задания. How Batteries Work 1. An electrical battery is a combination o...: ответ на тест 893181 - Английский язык

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How Batteries Work
1. An electrical battery is a combination of one or more electrochemical cells, used to convert stored chemical energy into electrical energy. Since the invention of the first Voltaic pile in 1800 by Alessandro Volta, the battery has become a common power source for many household and industrial applications.
2. Inside the battery itself, a chemical reaction produces the electrons. The speed of electron production by this chemical reaction (the battery's internal resistance) controls how many electrons can flow between the terminals. Electrons flow from the battery into a wire, and must travel from the negative to the positive terminal for the chemical reaction to take place. That is why a battery can be stored on a shelf for a year and still have plenty of power. Once you connect a wire, the reaction starts.
3. Batteries may be used once and discarded, or recharged for years as in standby power applications. Miniature cells are used to power devices such as hearing aids and wristwatches; larger batteries provide standby power for telephone exchanges or computer data centers.
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  • Battery has become a common power source due to peculiarity of its energy generation as well as simplicity and significance of its application.
  • Battery represents a potential energy source as it can be stored for some time and still be powerful.
  • People can’t do without batteries nowadays as they are used to power some important devices.
  • An electrical battery is a combination of one or more electrochemical cells, used to convert stored chemical energy into electrical energy.
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Вопрос задал(а): Анонимный пользователь, 13 Ноябрь 2020 в 16:05
На вопрос ответил(а): Анастасия Степанова, 13 Ноябрь 2020 в 16:05

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Вопрос № 1036229

Прочитайте текст и выполните задания.
How Batteries Work
1. An electrical battery is a combination of one or more electrochemical cells, used to convert stored chemical energy into electrical energy. Since the invention of the first Voltaic pile in 1800 by Alessandro Volta, the battery has become a common power source for many household and industrial applications.
2. Inside the battery itself, a chemical reaction produces the electrons. The speed of electron production by this chemical reaction (the battery's internal resistance) controls how many electrons can flow between the terminals. Electrons flow from the battery into a wire, and must travel from the negative to the positive terminal for the chemical reaction to take place. That is why a battery can be stored on a shelf for a year and still have plenty of power. Once you connect a wire, the reaction starts.
3. Batteries may be used once and discarded, or recharged for years as in standby power applications. Miniature cells are used to power devices such as hearing aids and wristwatches; larger batteries provide standby power for telephone exchanges or computer data centers.
Определите основную идею текста.
People can’t do without batteries nowadays as they are used to power some important devices.
An electrical battery is a combination of one or more electrochemical cells, used to convert stored chemical energy into electrical energy.
Battery represents a potential energy source as it can be stored for some time and still be powerful.
Battery has become a common power source due to peculiarity of its energy generation as well as simplicity and significance of its application.

Вопрос № 976001

Прочитайте текст и выполните задания.
How Batteries Work
1. An electrical battery is a combination of one or more electrochemical cells, used to convert stored chemical energy into electrical energy. Since the invention of the first Voltaic pile in 1800 by Alessandro Volta, the battery has become a common power source for many household and industrial applications.  
2. Inside the battery itself, a chemical reaction produces the electrons. The speed of electron production by this chemical reaction (the battery's internal resistance) controls how many electrons can flow between the terminals. Electrons flow from the battery into a wire, and must travel from the negative to the positive terminal for the chemical reaction to take place. That is why a battery can be stored on a shelf for a year and still have plenty of power. Once you connect a wire, the reaction starts.
3. Batteries may be used once and discarded, or recharged for years as in standby power applications. Miniature cells are used to power devices such as hearing aids and wristwatches; larger batteries provide standby power for telephone exchanges or computer data centers.
Определите основную идею текста.
Battery represents a potential energy source as it can be stored for some time and still be powerful.
An electrical battery is a combination of one or more electrochemical cells, used to convert stored chemical energy into electrical energy.
People can’t do without batteries nowadays as they are used to power some important devices.
Battery has become a common power source due to peculiarity of its energy generation as well as simplicity and significance of its application.

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Вопрос № 893182

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Vacuum
1. Evangelista Torricelli produced the first laboratory vacuum in 1643, and other experimental techniques were developed as a result of his theories of atmospheric pressure. A torricellian vacuum is created by filling a tall glass container closed at one end with mercury and then inverting the container into a bowl to contain the mercury.
2. The quality of a vacuum refers to how closely it approaches a perfect vacuum. Residual gas pressure is a primary indicator of quality, and is most commonly measured in units called torr, even in metric contexts. Lower pressures indicate higher quality, although other variables must also be taken into account.
3. Vacuum became a valuable industrial tool in the 20th century with the introduction of incandescent light bulbs and vacuum tubes, and a wide array of vacuum technology has since become available. The recent development of human spaceflight has raised interest in the impact of vacuum on human health, and on life forms in general.
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Вопрос № 893183

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Teaching
1. Good teaching is not a matter of techniques or methods, for, as curriculum is not education, so method is not teaching. Research indicates that good teachers cannot be differentiated on the basis of «teaching methods». The method is inseparable from the person of the teacher; in fact, the person of the teacher is more important than the method. 2. The good teacher is not an instructor, who simply provides information, facts and knowledge but a facilitator of learning for the student. Good teachers are not those who are simply experts in subject matter, or experts in teaching methods, or curriculum experts, or who utilize the most resources, such as audiovisual aids.
3. The best teacher is one who, through establishing a personal relationship, frees the student to learn. Learning can only take place in the student and the teacher can only create the conditions for learning. The atmosphere created by a good interpersonal relationship is the major condition for learning.
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Вопрос № 893184

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Cognitive psychology
1. Cognitive psychology is a discipline within psychology that investigates the internal mental processes of thought such as visual processing, memory, problem solving, and language. The school of thought arising from this approach is known as cognitivism which is interested in how people mentally represent information processing.
2. Cognitive psychologists use psychophysical and experimental approaches to understand, diagnose, and solve problems, concerning themselves with the mental processes which mediate between stimulus and response.
3. Cognitive science differs from cognitive psychology in that algorithms that are intended to simulate human behavior are implemented or implementable on a computer. In other instances, solutions may be found through insight, a sudden awareness of relationships.
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Вопрос № 893185

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The role of play at the lesson
1. Children grow, learn and even investigate the world through play. Play is the basis for discovery, reasoning and thinking. When children are given the freedom to experiment, to make mistakes and then to learn from these mistakes, they are developing skills that will stay with them for life.
2. Children do not differentiate between play, learning and work. Children are playful by nature. They love to play because play is an activity in which any child is open to express his points of view, ideas and thoughts,
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