Quiz in the preparatory group on the topic “Electricity. Intellectual quiz "Electricity around us Questions for the quiz about electricity

Lesson topic:

Repetitive-systematizing lesson-competition on the topic "Amazing Electricity"

The purpose of the lesson: in an unconventional, entertaining form, repeat the main program material, develop the cognitive activity and creativity of students, their ingenuity, observation and sense of humor, and broaden their technical horizons.

Developmental tasks: to develop and consolidate the skills of solving experimental, computational and qualitative problems, to develop the oral speech of students, to teach how to apply knowledge in a new situation; to teach competently to explain the occurring physical phenomena, to form teamwork skills in combination with the independent activity of students.

The teacher's task in the lesson: creating conditions for the manifestation of the activity of students, the development of their individuality; development of research competence of students; increasing their interest in the subject.

Strive to comprehend science ever deeper.
Hungry for the knowledge of eternal thirst.
Only the first knowledge will flash your light
You learn: there is no limit to knowledge.

Ferdowsi
(Persian and Tajik poet, 940-1030)

Poster:

Let the work be in full swing
Competition is difficult
Success is not fate
And your knowledge!

DURING THE CLASSES:

Organizational moment (before the start of the lesson):

1. jury selection.
2. dividing students into 2 teams, choosing the name of the team, the captain.

Introduction by the teacher:

Today we will remember all about currents -
Charged particle flows.
And about sources, about schemes,
And the heating problem
Scientists whose minds and hands
Left their mark on science
Appliances and circuits laws,
Pendants, Volts, Ohms,
We will decide, we will tell, we will collect,
We will have a good time!
And we will find the winners!

1st competition "Warm-up":

Teams must answer the questions they were asked and, after completing the tasks, receive two password words, which will become parting words for further success. (Answers are given by the jury).

Questions of the assignment for the 1st team:

1. One of the natural sciences (take the 3rd letter).
2. Battery positive electrode (take 2nd letter).
3. Unit of measurement of current strength (take the 1st letter).
4. A particle that scientists have found in the core (take the 1st letter).
5. Substance that does not conduct electric current (take the 2nd letter).
6. The surname of the Russian scientist who built the first electric motor (take the 1st letter).

ANSWERS:

1. Physics.
2. Anode.
3. Ampere.
4. Neutron.
5. Dielectric.
6. Jacobi.

WORD-PASSWORD: "knowledge".

Task questions for the 2nd team:

1. A drawing that shows how to connect electrical devices in a circuit (take 1 letter).
2. Substances whose conductivity is intermediate between conductors and dielectrics (take the 11th letter).
3. The unit of electrical charge (take the 3rd letter).
4. Current measuring device (take 1 letter).

ANSWERS:

1. Scheme.
2. Semiconductors.
3. Pendant.
4. Ammeter.

WORD-PASSWORD: "power".

2nd competition "Problems":

Teacher's word:
And now I invite teams to take part in the competition "Castle of Historians of Science and Technology". 1 student is invited from the team at will, who need to solve the calculation problems of historical content.

Note: I propose a list of tasks of historical content for the competition "Castle of historians of science and technology."

Problem number 1... On July 1, 1892, a tram began to run in Kiev on the Podol-Khreshchatyk line. His motor was rated for 20 A at 500 V. What power was the motor? (Answer: 10,000 V \u003d 10 kW).

Problem number 2... In 1887 the Perm plant built a dynamo machine according to the drawings of the Russian engineer N.G. Slavyanov. She had a power of 18 kW and could give a current with a force of 30 A. What voltage was at her terminals? (Answer: 60 V.)

Problem number 3... The first domestic rectifier was a high-voltage mercury rectifier designed by V.P. Vologdin. It was created in 1922, had a power of 10,000 W and gave a current at a voltage of 3500 V. How much current did the rectifier provide? (Answer: 1.29 A.)

Problem number 4... The largest radio station operating in Russia during the First World War was Khodynskaya. It had a 320 kW current generator, and the voltage at its terminals was 220 V. Find the current generated by the generator. (Answer: 1455 A.)

3rd Contest "Physics Experts":

At the same time, a competition called Physics Experts is being held.

First, a report prepared by the student on the topic “ The effect of electric current on the human body”(See“ Amusing physics evenings in high school ”, p. 103). After that the quiz "Electric current and human safety" is held. The quiz questions are written on bright, multi-colored chamomile petals and are offered to the teams to choose from.

QUIZ QUESTIONS:

1. In the car, there is only one wire from the batteries to the bulbs. Why is there no second wire?

   ANSWER: The second wire is the car body.

2. What is the minimum voltage that can cause a severe electrical shock to a person?

   ANSWER: Severe electric shock is possible at voltages starting at approximately 30 V.

3. Why is it dangerous to stand in a crowd during a thunderstorm?

   ANSWER: During a thunderstorm, it is dangerous to stand in a crowd because the vapors released when people breathe increase the electrical conductivity of the air.

4. Why is it possible for a person to be electrocuted in damp rooms even if he touches the glass cylinder of an electric light bulb?

   ANSWER: The glass cylinder of an electric light bulb, covered with a layer of moisture, conducts an electric current, which under certain conditions can cause injury to a person.

5. What determines the biological effect of the current and how much current can cause a fatal outcome?

   ANSWER: The biological effect of the current depends on the magnitude of the current flowing through the victim's body. A current of 0.025 A causes transient paralysis, while a current of 0.1 A or more is fatal.
   

6. Why can lightning passing through a tree deflect and pass through a person standing near the tree?

   ANSWER: Electric current passes mainly through a section of the circuit with a lower resistance. If the human body turns out to be the best conductor, then the electric current will pass through it, and not through the tree.

7. Christmas tree garlands are often made from flashlight bulbs. The bulbs are connected in series, and then each of them has a very low voltage. Why is it dangerous to unscrew one light bulb and stick your finger into its socket?

   ANSWER: The resistance of a light bulb from a flashlight is small - a few ohms, and the resistance of the entire garland is several hundred ohms, and the resistance of a finger is several thousand ohms. When the circuit is connected in series, the voltage drop across the section is proportional to its resistance. Therefore, on the finger, if you put it into the cartridge, you will have almost all the mains voltage.
   

8. Why, when transporting flammable liquids, a chain is attached to the body of a tanker, which drags along the ground when driving?

   ANSWER: When transported in tank trucks, flammable liquids are agitated and electrified. To avoid sparks and fires, a circuit is used that conducts the charges to the ground.

9. Who owns the words: "Now I know what an atom looks like"?

   ANSWER: These words belong to the English physicist Rutherford, they were said in 1911.

10. What is lightning?

    ANSWER: An electrical discharge in the atmosphere in the form of a linear lightning is an electric current, and the current strength changes in 0.2-0.3 s, during which the current pulses in the lightning last. Approximately 65% \u200b\u200bof all lightning observed in our country has the highest current strength of 10,000 A, but in rare cases it reaches 230,000 A.

11. Who Invented the Incandescent Light Bulb?

    ANSWER: Russian inventor - Alexander Nikolaevich Lodygin. The American inventor Edison received several Lodygin bulbs: one Russian officer brought them to America. At the end of 1879, Edison created his own light bulb with a screw base and a socket called Edison's. All patents issued to Edison were formulated only as proposals for improving the previously patented Lodygin lamp.

Note: it is necessary to correctly answer the questions of the quiz, for each correctly answered question - 1 token.

4th competition "Search":

Teacher: SEARCH”Which was one of the homework assignments. The teams received an assignment in advance - to find interesting facts in magazines, books on the topic “ Electricity”, And prepare small messages. The floor is given to representatives from the teams.

Teacher: it's time to give the floor to the jury and sum up the results of the competitions.

5th competition "Lovers of crossword puzzles":

The task: sheets of crosswords and texts to them are handed over. You need to guess the crossword puzzle in 3 minutes. Answer options are submitted by the jury. Here is an example of a crossword puzzle that was used in the lesson.

Horizontally:

1. A physical quantity, the unit of which is named after the Italian scientist Volta.
2. The surname of the Russian scientist who participated in the first experimental studies of atmospheric electricity in Russia.

Vertically:

1. Substances that transmit electric current well.
2. Surname of the Russian scientist who built the first electric motor.

1. Voltage.
2. Lomonosov.
3. Conductors.
4. Jacobi.

Teacher: the jury will sum up the results of the competitions.

6th competition "What does it mean?":

Teacher: and now we will hold a competition called “ What does it mean?»On the table are various equipment for demonstrating experiments. Representatives from the teams must show the experience they have prepared, and the opposing team must explain the experience they have seen. The wit and originality of the answers are taken into account.

7th competition "People of Science":

Teacher: in the competition " People of science", Which will be held now, all teams participate simultaneously. The purpose of this competition is to determine the name and surname of the scientist before the competitors, using information about him.

One participant from the team is invited to complete the task;

Participant task: name a scientist whose last name consists of 5 letters:

1. the first is in the name of the electrode connected to the positive pole of the current source;
2. the second is the second in the name of the unit of resistance;
3. third - third in the name of the device for measuring current strength,
4. fourth - fourth in the name of the unit of current strength;
5. the fifth is the last in the name of the voltage measuring device.

1. Anode.
2. Ammeter.
3. Ampere.
4. Voltmeter.

WORD-PASSWORD: Ampere.

Simultaneously for all teams 2nd stage competition. Questions:

1. The great Maxwell said about him: “The studies ... in which he established the laws of the mechanical interaction of electric currents are among the most brilliant works that have ever been carried out in science. Theory and experience, as if in full force and completeness, poured out immediately from the head of this "Newton of electricity". On his tombstone are the words: "He was as kind and as simple as he was great." (Andre-Marie Ampere)
2. He discovered one of the most important quantitative laws of the electric current circuit. He established the constancy of the current in different parts of the circuit, showed that the current decreases with an increase in the length of the wire and with a decrease in its cross-sectional area. He found a series of many substances with increasing resistance. (Georg Ohm).
3. A brewer by profession, he was an excellent experimenter, investigated the laws of heat release by electric current, made a great contribution to the kinetic theory of gases. (James Joule.)
4. He was a knight of the Legion of Honor, received the rank of senator and count. Napoleon did not miss the opportunity to attend the meetings of the French Academy of Sciences, where he spoke. He invented the electric battery, splendidly called the "crown of vessels." (Alessandro Volta.)
5. He became an academician at the age of 39, and his work on magnetism and electricity did not play the slightest role in the election. There were essentially none of them. He was elected from the Geometry Section for his research in mathematics and chemistry. (Andre-Marie Ampere.)
6. He was famous for his absent-mindedness. It was said about him that once, with a concentrated look, he boiled his watch in water for 3 minutes, holding an egg in his hand. (Andre-Marie Ampere.)
7. He discovered one of the most important laws of electricity in 1785 using a torsion balance. The technique used by him proves once again that the ingenuity of the human mind knows no boundaries. (Charles Pendant.)

Teacher: and now let's summarize. The word of the jury.

8th Competition "Physical Relay":

Teacher: it's time to check the knowledge of formulas and theoretical material on the topic passed " Electricity", And the competition" Physical relay". This competition is held in two stages. The purpose of the competition is to test students' knowledge of formulas.

1st stage: one participant from the team are invited to receive assignments; at the same time, the 2nd stage of the competition called "Let's solve" is held, in which the team captains receive tasks. The preparation time for responses is 5 minutes. The answers are given by the jury.

Teacher: so, friends, let's start!

ASSIGNMENT FOR STAGE 1:

ASSIGNMENT OF THE 2nd STAGE:

Teacher: Well, now it's time to sum up the results of our lesson-competition. Today we did a good job: we repeated the main program material on the topic “ Electricity”Applied their knowledge in new situations. I would like to hope that today's lesson will awaken your thirst for new knowledge, because the “great ocean of truth” still unfolds before you not fully explored.

While the jury determines the winner, the lesson is reflected with the students.

Jury word: summing up, awarding the winners.

"Entertaining questions and answers on electricity"

Place of work: MOU gymnasium №36, Ivanov

Position: Physics teacher

Interesting questions and answers on electricity

We will consider only some questions and answers so far - join, send your questions and answers on this topic!

1 question. In the practice of museum work, there is sometimes a need to read ancient old scrolls, which tear and break even with the most careful attempt to separate the layers of the manuscript. How to separate such sheets?

Answer. With the help of electricity: the scroll is electrified, and neighboring parts of it, receiving the same charge, repel each other. The gaps between the layers of paper increase and can be separated without damage. Therefore, the scroll is already easy to unfold with skillful hands and stick on thick paper.

2) Question. Stroking a cat with a dry palm in the dark, you can observe small sparks that appear between the hand and the fur. Why?

Answer. When a cat is stroked, both the cat's fur and hands are electrified. This electrification, as always with the friction of two bodies, is opposite. Charges on a person and wool accumulate, and a spark discharge (short-term electric current in the air) occurs.

3) Question. If you take two wires, iron and aluminum (or two others, but different), stick them into a lemon, and then connect them to a voltmeter, it will show the presence of voltage. Why?

Answer. Citric acid and two wires of different metals form a current source - a galvanic cell. The voltage generated by it is less than 1 V. Using wires made of any other metals, a juicy apple or pickled cucumber, we also get galvanic cells.

4) Question. What kind of fish do people sometimes call living power plants? Which fish have special organs for storing electricity? How great is the tension they create?

Answer. The most famous electric fish are electric eel (up to 800 V), electric stingray (up to 150 discharges per 1 s, 80 V each, for 10-16 s) and electric catfish (up to 360 V). Their electrical organs are groups of mutated muscle or nerve cells. They serve for defense, attack, orientation and signaling.

5) Question. In the cells, tissues and organs of animals and plants, a certain potential difference arises between their individual sections (this is how the electric voltage is called). These biopotentials are associated with metabolic processes in the body. What do you think is the magnitude of these potentials?

Answer. The resulting biopotentials are very small. The voltage ranges from a few microvolts to tens of millivolts. To register these potentials, very sensitive devices are required that allow measuring the biocurrents of living tissue without distortion.

6) Question. To check the quality of a flashlight battery, sometimes the tongue is touched to its metal contacts. If the tongue feels a sharp bitterness and burning sensation, then the battery is good. Why does the electricity in a battery taste bitter?

Answer. Human saliva contains various mineral salts (sodium, potassium, calcium, etc.). When an electric current passes through saliva, these salts undergo electrolysis - decomposition into simpler and "tasteless" substances. Therefore, the tongue feels bitter and burning.

Internet resources:

http://www.google.ru/images?um\u003d1&hl\u003dru&newwindow\u003d1&client\u003dopera&rls\u003dru&ndsp\u003d18&tbs\u003disch%3A1&sa\u003d3&q\u003d%D1%84%D0%B8%D0%B7%D0%B8%D0 % BA% D0% B0 +% D1% 8D% D0% BB% D0% B5% D0% BA% D1% 82% D1% 80% D0% B8% D1% 87% D0% B5% D1% 81% D1% 82 % D0% B2% D0% BE & btnG \u003d% D0% 9F% D0% BE% D0% B8% D1% 81% D0% BA +% D0% BA% D0% B0% D1% 80% D1% 82% D0% B8% D0% BD% D0% BE% D0% BA

Lesson type:Lesson in generalization and repetition of the passed material.

Form of carrying out: Lesson game, quiz

Technical and software requirements for the lesson: computer, multimedia projector, quiz presented using Microsoft PowerPoint ( application)

The purpose of the lesson : to repeat and summarize knowledge on the topic: “Electrical phenomena”.

Lesson Objectives:

Educational:

• Formation of the ability to draw independent conclusions, the development of intersubject connections, broadening the horizons.

Educational:

• Fostering students' self-esteem, creative initiative, accuracy, discipline;

Developing:

• Development of interest in the subject, logical thinking, attention, observation;
• Development of skills to work in a group;

Organizational moment (topic and purpose of the lesson)

Today we have a goal:

Repeat and generalize everything,
Do the analysis, compare everything
And to solve many problems.
And also need to explain
How to live without electricity.
At the end of the lesson, fix
And, of course, appreciate it!

We will generalize and consolidate the knowledge gained today in the form of a game called "Electricity around us."

Game rules: You are provided with 5 game categories (on the board):

1. Historical page: this category reflects historical facts related to the life of scientists, cultural heritage associated with prominent names and contributions to science.
2. Interactions of charged particles: This category reflects the behavior of particles in electrical interactions and their variety and characteristics.
3. Characteristics of electric current: This category reflects information on quantities that show quantitative measures of the electric field.
4. Black box: in this category, you will find a variety of questions aimed at outlook and intersubject knowledge.
5. General knowledge of physics: this category contains questions related to other areas of physics.

The teacher introduces the teams and draws lots.

Didactic lesson structure

Board type

Computer use technique

The computer in this lesson is used as a demonstration tool and involves the use of a multimedia projector. No computer lab required. Computer technologies make it possible to conduct a lesson with vivid demonstrations, more quickly than in a paper version or when working with a board. The lesson takes about 1 hour (60 minutes).

During the classes

Thanks for playing! It was very interesting with you!

Concluding remarks from the facilitator:

Electricity all around
The plant and the house are full of them,
Currents help us a lot,
Life is radically easier!
All wires "majesty"
It's called "electricity!"

The final song of the teams.

Description of the presentation for individual slides:

1 slide

Slide Description:

Shchepachev V.I., master of the p / o Chebarkul vocational technical school Quiz "Amazing electricity"

2 slide

Slide Description:

Purpose: in an unconventional, entertaining form, repeat the main program material, develop the cognitive activity and creativity of students, their ingenuity, observation and sense of humor, expand their technical horizons. Developing tasks: to develop and consolidate the skills of solving experimental, computational and qualitative problems, to develop the oral speech of students, to teach to apply knowledge in a new situation; teach to correctly explain the occurring physical phenomena, to form teamwork skills in combination with the independent activity of students. The task of the pedagogical worker is to create conditions for the manifestation of the activity of students, the development of their individuality; development of research competence of students; increasing their interest in the subject.

3 slide

Slide Description:

Epigraph: Strive to comprehend the science deeper and deeper. Thirst for the knowledge of eternal thirst. Only the first knowledge will flash your light, You learn: there is no limit to knowledge. Ferdowsi (Persian and Tajik poet, 940-1030)

4 slide

Slide Description:

Poster: Let the work be in full swing, Competitions are difficult, Success is not decided by fate, But your knowledge!

5 slide

Slide Description:

1st competition "Warm-up" Teams must answer the questions they were asked and, after completing the tasks, receive two password words, which will become parting words for further success. (Answers are given by the jury). Task questions for the 1st team: One of the natural sciences (take the 3rd letter). The positive electrode of the electric battery (take the 2nd letter). Unit of measurement of current strength (take the 1st letter). A particle that scientists have found in the core (take the 1st letter). A non-conductive substance (take the 2nd letter). The surname of the Russian scientist who built the first electric motor (take the 1st letter). ANSWERS: Physics. Anode. Ampere. Neutron. Dielectric. Jacobi. WORD-PASSWORD: "knowledge".

6 slide

Slide Description:

1st competition "Warm-up": Questions of the assignment for the 2nd team: A drawing that shows how to connect electrical appliances in a circuit (take 1 letter). Substances whose conductivity is intermediate between conductors and dielectrics (take the 11th letter). The unit of electrical charge (take the 3rd letter). Current measuring device (take 1 letter). ANSWERS: Scheme. Semiconductors. Pendant. Ammeter. WORD-PASSWORD: "power".

7 slide

Slide Description:

2nd competition "Tasks": Word of the teacher: And now I invite teams to take part in the competition "Castle of historians of science and technology." 1 student is invited from the team at will, who need to solve the calculation problems of historical content. Note: I propose a list of tasks of historical content for the competition "Castle of historians of science and technology." Problem No. 1. On July 1, 1892, a tram began to run in Kiev on the Podol-Khreshchatyk line. His motor was rated for 20 A at 500 V. What power was the motor? (Answer: 10,000 V \u003d 10 kW). Problem No. 2. In 1887, the Perm plant built a dynamo machine according to the drawings of the Russian engineer NG Slavyanov. She had a power of 18 kW and could give a current with a force of 30 A. What voltage was at her terminals? (Answer: 60 V.) Problem No. 3. The first domestic rectifier was a high-voltage mercury rectifier designed by V. P. Vologdin. It was created in 1922, had a power of 10,000 W and gave a current at a voltage of 3500 V. How much current did the rectifier provide? (Answer: 1.29 A.) Problem number 4. The largest radio station operating in Russia during the First World War was Khodynskaya. It had a 320 kW current generator, and the voltage at its terminals was 220 V. Find the current generated by the generator. (Answer: 1455 A.)

8 slide

Slide Description:

3rd Contest "Experts" First, a report prepared earlier by the student on the topic "The effect of electric current on the human body" is read (see "Entertaining evenings in physics in secondary school", p. 103). After that the quiz "Electric current and human safety" is held. The quiz questions are written on bright, multi-colored chamomile petals and are offered to the teams to choose from.

9 slide

Slide Description:

QUIZ QUESTIONS: In the car from the batteries to the bulbs there is only one wire. Why is there no second wire? ANSWER: The second wire is the car body. What is the minimum voltage that can cause a severe electric shock to a person? ANSWER: A severe shock can occur at voltages starting at approximately 30 V. Why is it dangerous to stand in a crowd during a thunderstorm? ANSWER: During a thunderstorm, it is dangerous to stand in a crowd because vapors released when people breathe increase the electrical conductivity of the air. Why is it possible for a person to be electrocuted in damp rooms even if he touches the glass bulb of an electric light bulb? ANSWER: A glass bulb of an electric light bulb covered with a layer of moisture conducts an electric current that, under certain conditions, can cause injury to a person.

10 slide

Slide Description:

QUESTIONS QUESTIONS: Why does the biological effect of the current depend and what magnitude of the current can cause a fatal outcome? ANSWER: The biological effect of the current depends on the magnitude of the current flowing through the victim's body. A current of 0.025 A causes transient paralysis, while a current of 0.1 A or more is fatal. Why lightning passing through a tree can deflect and pass through a person standing near the tree? ANSWER: Electricity passes mainly through a section of the circuit with a lower resistance. If the human body turns out to be the best conductor, then the electric current will pass through it, and not through the tree. Christmas tree garlands are often made from flashlight bulbs. The bulbs are connected in series, and then each of them has a very low voltage. Why is it dangerous to unscrew one light bulb and stick your finger into its socket? ANSWER: The resistance of a light bulb from a flashlight is small - a few ohms, and the resistance of the entire garland is several hundred ohms, and the resistance of a finger is several thousand ohms. When the circuit is connected in series, the voltage drop across the section is proportional to its resistance. Therefore, on the finger, if you put it into the cartridge, you will have almost all the mains voltage.

11 slide

Slide Description:

QUIZ QUESTIONS: Why, when transporting flammable liquids, a chain is attached to the body of a tanker, which drags along the ground during movement? ANSWER: When transported in tank trucks, flammable liquids are agitated and electrified. To avoid sparks and fires, a circuit is used that conducts the charges to the ground. Who owns the words: "Now I know what an atom looks like"? ANSWER: These words belong to the English physicist Rutherford, they were said in 1911. What is lightning? ANSWER: An electrical discharge in the atmosphere in the form of a linear lightning is an electric current, and the current strength changes in 0.2-0.3 s, during which the current pulses in the lightning last. Approximately 65% \u200b\u200bof all lightning observed in our country have the highest current strength of 10,000 A, but in rare cases it reaches 230,000 A. Who invented the incandescent light bulb? ANSWER: Russian inventor - Alexander Nikolaevich Lodygin. The American inventor Edison received several Lodygin bulbs: one Russian officer brought them to America. At the end of 1879, Edison created his own light bulb with a screw base and a socket called Edison's. All patents issued to Edison were formulated only as proposals for improving the previously patented Lodygin lamp. Note: it is necessary to correctly answer the questions of the quiz, for each correctly answered question - 1 token.

12 slide

Slide Description:

4th competition "Search": Teaching staff: and now we will hold a competition called "SEARCH", which was one of the homework assignments. The teams received the task in advance - to find interesting facts about the topic "Electricity" in magazines and books and prepare small messages. The floor is given to representatives from the teams. Pedagogical worker: it's time to give the floor to the jury and sum up the results of the competitions.

13 slide

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Slide Description:

5th competition "Lovers of crossword puzzles": Horizontal: Physical quantity, the unit of measurement of which is named after the Italian scientist Volta. The surname of the Russian scientist who participated in the first experimental studies of atmospheric electricity in Russia. Vertical: Substances that transmit electric current well. Surname of the Russian scientist who built the first electric motor. ANSWERS: Voltage. Lomonosov. Conductors. Jacobi. Teacher: the jury will sum up the results of the competitions.

15 slide

Slide Description:

6th competition "What does it mean?": Educator: now we will hold a competition called "What does it mean?" On the table are various equipment for demonstrating experiments. Representatives from the teams must show the experience they have prepared, and the opposing team must explain the experience they have seen. Takes into account the wit and originality of the answers

16 slide

Slide Description:

7th competition "People of Science": Pedagogical worker: in the competition "People of Science", which will now be held, all teams participate simultaneously. The purpose of this competition is to determine the name and surname of the scientist before the competitors, using information about him. One participant from the team is invited to complete the task; Assignment to the participant: name a scientist whose surname consists of 5 letters: the first - in the name of the electrode connected to the positive pole of the current source; the second is the second in the name of the unit of resistance; the third is the third in the name of the device for measuring the current strength, the fourth is the fourth in the name of the unit of current strength; the fifth is the last in the name of the voltage measuring device. ANSWERS: Anode. Ohm. Ammeter. Ampere. Voltmeter. WORD-PASSWORD: Ampere.

17 slide

Slide Description:

7th competition "People of Science": Simultaneously, the 2nd stage of the competition is held for all teams. Questions: The great Maxwell said about him: “The studies ... in which he established the laws of the mechanical interaction of electric currents are among the most brilliant works that have ever been carried out in science. Theory and experience, as if in full force and completeness, poured out immediately from the head of this "Newton of electricity". On his gravestone are the words: "He was as kind and as simple as he was great." (Andre-Marie Ampere) He discovered one of the most important quantitative laws of the electric current circuit. He established the constancy of the current in different parts of the circuit, showed that the current decreases with an increase in the length of the wire and with a decrease in its cross-sectional area. He found a series of many substances with increasing resistance. (Georg Ohm). A brewer by profession, he was an excellent experimenter, investigated the laws of heat release by electric current, made a great contribution to the kinetic theory of gases. (James Joule.) He was a Knight of the Legion of Honor, was promoted to Senator and Earl. Napoleon did not miss the opportunity to attend the meetings of the French Academy of Sciences, where he spoke. He invented the electric battery, splendidly called the "crown of vessels." (Alessandro Volta.) He became an academician at the age of 39, and his work on magnetism and electricity did not play the slightest role in the election. There were essentially none of them. He was elected to the Geometry Section for his research in mathematics and chemistry. (Andre-Marie Ampere.) He was famous for his absent-mindedness. It was said about him that once, with a concentrated look, he boiled his watch in water for 3 minutes, holding an egg in his hand. (André-Marie Ampere.) He discovered one of the most important laws of electricity in 1785, using a torsion balance. The technique used by him proves once again that the ingenuity of the human mind knows no boundaries. (Charles Coulomb.) Educational worker: now let's summarize. The word of the jury.

18 slide

Slide Description:

8th competition "Relay": Teacher: the time has come to check the knowledge of formulas and theoretical material on the passed topic "Electricity", and the "Relay" competition will help us in this. This competition is held in two stages. The purpose of the competition is to test students' knowledge of formulas. 1st stage: one participant from the team is invited to receive assignments; at the same time, the 2nd stage of the competition called "Let's solve" is held, in which the team captains receive tasks. The time for preparing answers is 5 minutes. The answers are given by the jury. Educational worker: so, friends, let's start!

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Pedagogical worker: Well, now it's time to sum up the results of our lesson-competition. Today we did a good job: we repeated the main program material on the topic “Electricity”, applied our knowledge in new situations. I would like to hope that today's lesson will awaken your thirst for new knowledge, because the "great ocean of truth" is still spread out before you not fully explored. While the jury determines the winner, the lesson is reflected with the students. The word of the jury: summing up the results, awarding the winners.

The great Maxwell said about him: “The studies ... in which he established the laws of the mechanical interaction of electric currents are among the most brilliant works that have ever been carried out in science. Theory and experience, as if in full force and completeness, poured out immediately from the head of this "Newton of electricity". On his tombstone are the words: "He was as kind and as simple as he was great." (Andre-Marie Ampere)

He discovered one of the most important quantitative laws of the electric current circuit. He established the constancy of the current in different parts of the circuit, showed that the current decreases with an increase in the length of the wire and with a decrease in its cross-sectional area. He found a series of many substances with increasing resistance. (Georg Ohm).

A brewer by profession, he was an excellent experimenter, investigated the laws of heat release by electric current, made a great contribution to the kinetic theory of gases. (James Joule.)

He was a knight of the Legion of Honor, received the rank of senator and count. Napoleon did not miss the opportunity to attend the meetings of the French Academy of Sciences, where he spoke. He invented the electric battery, splendidly called the "crown of vessels." (Alessandro Volta.)

He became an academician at the age of 39, and his work on magnetism and electricity did not play the slightest role in the election. There were essentially none of them. He was elected from the Geometry Section for his research in mathematics and chemistry. (Andre-Marie Ampere.)

He was famous for his absent-mindedness. It was said about him that once, with a concentrated look, he boiled his watch in water for 3 minutes, holding an egg in his hand. (Andre-Marie Ampere.)

He discovered one of the most important laws of electricity in 1785 using a torsion balance. The technique used by him proves once again that the ingenuity of the human mind knows no boundaries. (Charles Pendant.)

ANSWER: The second wire is the car body.

ANSWER: Severe electric shock is possible at voltages starting at approximately 30 V.

ANSWER: During a thunderstorm, it is dangerous to stand in a crowd because the vapors released when people breathe increase the electrical conductivity of the air.

ANSWER: The glass cylinder of an electric light bulb, covered with a layer of moisture, conducts an electric current, which under certain conditions can cause injury to a person.

ANSWER: The biological effect of the current depends on the magnitude of the current flowing through the victim's body. A current of 0.025 A causes transient paralysis, while a current of 0.1 A or more is fatal.

ANSWER: Electric current passes mainly through a section of the circuit with a lower resistance. If the human body turns out to be the best conductor, then the electric current will pass through it, and not through the tree.

ANSWER: The resistance of a light bulb from a flashlight is small - a few ohms, and the resistance of the entire garland is several hundred ohms, and the resistance of a finger is several thousand ohms. When the circuit is connected in series, the voltage drop across the section is proportional to its resistance. Therefore, on the finger, if you put it into the cartridge, you will have almost all the mains voltage.