Вопрос № 911706 - Английский язык

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What is a crystal? A crystal is a 1_______ solid made by a natural process. Many substances absorb water from solutions when they crystallize; that is, they unite chemically with a definite proportion of 2_______. The water with which any substance unites during the process of crystallization is called the water of crystallization.
Certain 3_______ substances, for example, washing soda, give up their water of crystallization when they are exposed air; they are then reduced to 4_______. Substances that have this property are called efflorescent, and the process is called efflorescence.

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A solution forms when one substance (usually solid) dissolves in another (usually a liquid). The solid breaks up into tiny particles and spreads throughout the liquid. 1_______. Solutions are always clear. 2_______. Solid particles spread throughout the liquid. 3_______. If you leave a suspension to stand, most of the solid particles will eventually sink. 4_______.

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How is a body that exhibits magnetism called?
It has been known for centuries that certain black, heavy stones have the property of attracting iron, this property being called magnetism. A body that exhibits magnetism is called a magnet. The two parts of a magnet that show the strongest magnetism are called the North pole and the South pole. Magnets not only affect ordinary iron, but they affect one another. When a pole of one magnet is brought towards a pole of the second magnet, they will repel if both are north poles or both are south poles, but they will attract if one is a north pole and the other a south pole.

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What is the best conductor of electricity?
Electricity and magnetism are closely connected. Almost all metals are good conductors of electricity, with copper being one of the best conductors of all. Glass, paper, rubber are the most common non-conductors or insulators.
Many practical applications have resulted from the utilization of the magnetic effect of an electric current.
These effects are used in motors, in most electric meters (ammeters, voltmeters and galvanometers), in electromagnets and in practically all electromechanical apparatus.

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Where did Lindbergh arrive on May 20-21, 1927?
Probably the most celebrated flight in the history of aviation was that of Charles A. Lindbergh from New York to Paris in his plane, the Spirit of St. Louis. He had been working as an airmail pilot when a group of businessmen from St. Louis offered a $25,000 prize to anyone who would fly non-stop across the Atlantic to Paris.
His flight took 33.5 hours. On May 20-21, 1927, Lindbergh arrived in Paris to a tumultuous welcome and became an instant international celebrity.

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What is the most common rolled product?
Rolling is the most common metalworking process. More than 90 percent of the aluminum, steel and copper produced is rolled at least once in the course of production. The most common rolled product is sheet. Rolling can be done either hot or cold. If the rolling is finished cold, the surface will be smoother and the product stronger.