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ЭН1-1. К контрольной работе №3 дополнительное задание для всех трёх вариантов ( А, В, С ) ГЛбз ЭН1 -1, 220700 Найдите по словарю значения заданны
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ЭН1-1. К контрольной работе №3 дополнительное задание для всех трёх вариантов ( А, В, С )
ГЛбз ЭН1 -1, 220700
Найдите по словарю значения заданных слов, встречающихся в тексте, постарайтесь их запомнить:
state, matter, molecule, to subdivide, division, further, particle, fundamental, definite, attraction, to combine, to contain, liquid, solid, heavy, however, vibration, shape, to heat, to vibrate, to expand, to move, substance, steam, mean.
Прочитайте внимательно текст, обратив внимание на пояснения, постарайтесь понять его и выполните задания к тексту письменно.
States of Matter: Solids, Liquids and Gases.
To understand the various states of matter and their connection to each other, we must understand the meaning of the word molecule.
We can divide a piece of material into small parts and then subdivide each of these small parts into still smaller parts. We shall continue this process of division until the parts become very, very small. In the end they will become so small that it will be impossible to divide them further. We call these smallest particles atoms. They are the fundamental building blocks of all materials and they have a definite attraction for each other.
Atoms combine into molecules and molecules may contain one, two, three and more atoms. In metals there is only one atom in a molecule, for example.
The molecules of a solid are very close together and have a great attraction for each other. The closer they are together, the heavier is the solid; however, the molecules are in state of continual vibration. In this state their attraction for each other is very great, and that is why it is very difficult to change the shape of a solid.
Now, if we heat the solid, the molecules begin to vibrate more and more and therefore there is less attraction for each other. Thus, a solid expands when we heat it. When the molecules are quite far apart from each other, the solid changes into a liquid.
If we continue to heat the liquid, the molecules begin to vibrate so strongly and they move so far apart from each other that they will have very little attraction for each other. Now the liquid becomes a gas which has no definite size.
The three states of matter – solid, liquid and gaseous – are very close to each other and more heat or less heat will change the substance from one state to the other. Ice, water and steam are examples of this change of state.
Пояснения к тексту:
have a great attraction for each other – сильно притягивают друг друга
They move so far apart from each other – они так далеко отодвигаются друг от друга
I Найдите в тексте английские эквиваленты русским словосочетаниям:
состояние материи state of matter
процесс деления process of division
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