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Some technological products can be dangerous for people.

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People treat technologies differently …

because they can be created for various purposes

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Why is the development of technology vitally important for people?

Technology provides people with the ability to control and adapt to their natural environments.

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Technology promotes people’s development in different spheres but its possible outcomes should be carefully examined before its wide application.

Light

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In the form of quanta light rays can travel through a vacuum.

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Unlike all other kinds of electromagnetic radiation light …

is able to be seen

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What quality do all energy forms travelling in ways hold?

They possess the property of refraction.

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Light possesses both its own distinctive characteristics and properties belonging to many other energy forms.

Solid

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A solid’s properties are quite different from those of a gas or a liquid due to its structure and the ability to resist.

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A solid has a constant form …

as the atoms in it are tightly bound to each other

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Why do there exist different types of solids?

This is due to the type of a chemical bond a certain solid possesses.

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A solid has its own distinctive characteristics which are studied by different branches of sciences.

Electricity

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Electricity can be changed into various energy forms.

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The kind of electricity which can be created at friction is called …

static electricity

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What device is designated for the continuous flow of electric current?

Electrical circuit allows electrons to flow through continuously without beginning or end.

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Electricity is a very changeable energy form being presented by different kinds.

Electromagnetism

Определите, какое утверждение соответствует содержанию текста. The controlling parts in a circuit can strengthen currents, turn them on and out, or change their direction.

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The interrelations of electricity and magnetism …are the most significant in physics

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Why is the study of electricity of paramount importance in electronics? Electricity is used to produce signals that carry information and control electronic devices.

Определите основную идею текста. Electromagnetism is one of the essential forces of the universe finding an increasingly wide application nowadays.

Date: 2015-12-11; view: 4235