- •Lesson 1
- •Electric current serves us in a thousand ways
- •Exercises
- •Lesson 2
- •Exercises
- •Lesson 3
- •Exercises
- •Lesson four
- •Lightning
- •Exercises
- •Lesson five
- •Atmospheric electricity
- •Exercises
- •Lesson six
- •Magnetism
- •Exercises
- •Lesson seven
- •Early history of electricity
- •Exercises
- •Lesson eight
- •History of thermometers
- •Exercises
- •Lesson nine
- •Lomonosov
- •Exercises
- •Lesson ten
- •From the history of electricity
- •Exercises
- •Lesson eleven
- •Electric current
- •Exercises
- •Lesson twelve
- •What is heat?
- •Exercises
- •Lesson 13
- •Electric circuit
- •Exercises
- •Lesson fourteen
- •Conductors and insulators
- •Exercises
- •Unit fifteen
- •Electromotive force and resistance
- •Exercises
- •Lesson sixteen
- •Heating effect of an electric current
- •Lesson seventeen
- •Magnetic effect of an electric current
- •Lesson eighteen
- •Generators
- •Exercises
- •Lesson nineteen
- •Power transmission
- •Exercises
- •Lesson twenty
- •Transformers
- •Exercises
Exercises
I. Learn the following words, groups of words. Translate the sentences.
1. to cause — вызывать, заставлять; причинять. Harnessing solar energy to produce electricity causes great difficulties.
2. certain — некоторый; определенный. Certain substances do not conduct the electrical current.
3. collision — столкновение. It is possible to observe the collision of molecules.
4. compression — сжатие. The gas temperature increases under compression.
5. conduction — проводимость. Copper possesses greater conduction than iron.
6. development — развитие. Great attention is paid to the development of nuclear physics.
7. effect — действие, влияние; результат. What effects of the electrical current are useful?
8. expansion — расширение, увеличение. Great expansion of research work is planned in the field of nuclear physics.
9. to expect — ожидать; рассчитывать. We expect the discovery to produce great changes.
10. to explain — объяснять. The teacher explained the problem to the students.
11. friction — трение. Friction is not always useful.
12. fire — огонь; пожар. Fire is a cause of heat. Sometimes lightning causes fire.
13. to place — помещать, класть. If you place a steel object into a magnetic field it is magnetized.
14. quantity — количество. Nuclear fuel contains great quantities of energy.
15. to take place — происходить, иметь место. What takes place inside a nuclear reactor?
16. term — термин. What new terms are used in your article?
II. Translate the following groups of words.
certain effects, expansion of gas, the development of theory, collision of particles, physical terms, to explain the laws
вызывать некоторые действия, важные термины, большое количество тепла, столкновение атомов, сжатие газов
III. Arrange the following words in pairs of antonyms.
at rest, positive, solid, right, fast, the last, useful, charge, hot, dark, negative, the first, increase, wrong, valuable, decrease, liquid, in motion, invaluable, slow, useless, discharge, cold, light
IV. Arrange the following words in pairs of synonyms.
to employ, to make, to travel, motion, similar, various, different, like, to receive, liquid, movement, to help, fluid, to assist, to do, to get, to use, to move
V. a) Form verbs from the following nouns.
increase, weight, statement, movement, difference, compression, collision, flow, application, requirement, knowledge, education, expansion, heat, water, paper
b) Use the verbs formed in sentences of your own.
VI. Translate the following questions and answer them.
1. Что такое тепло? 2. Почему предполагали, что тепло — это невесомое вещество? 3. Могли ли люди наблюдать некоторые тепловые эффекты? 4.Что происходит благодаря трению и сжатию? 5. Какие тепловые явления (phenomena) установил М.В. Ломоносов? 6. Из чего состоит вещество? 7. Как называются мельчайшие частицы вещества? 8. Что происходит, когда тело нагревается? 9. Существует ли заметная разница температур между холодным и горячим телами? 10. Какой прибор используется для измерения температуры?
VII. Make up the annotation of the text and retell it.