Прочитайте текст и найдите соответствующий перевод подчеркнутого выражения. Heat is a form of energy...: ответ на тест 1072218 - Английский язык

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Heat is a form of energy that transfers from one object or body to another if there is a difference in temperature between the two. When you are hot, for example, and the air outside your body is cooler, you lose heat to the air. A change in a body’s level of heat results in a change in the energy of its molecules. This gives rise to a temperature change, which may in turn lead to a change of state.

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Heat is the energy possessed by a substance in the form of kinetic energy of molecular movement, rotation, and vibration. Usually measured in calories. Transmitted by conduction, convention and radiation. The chief observable, physical effects of a change in the heat content of a body may include rise in temperature; change of state from solid to liquid, solid to gas, and liquid to gas; expansion; and electrical effects.  

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There are billions of stars in the universe. Stars are massive, energy-filled globes of fiery gases. The force of gravity holds these gases together. At a star’s core, atoms of hydrogen join together to form helium in a process called nuclear fusion. The energy generated by this process produces a star’s heat and light. Collections of stars are called galaxies, and each galaxy contains many different types of stars.

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Compound is a substance in which the atoms of two or more elements are joined together by chemical bonds. Because of these bonds, it is very difficult to split a compound into its individual elements. The type and number of bonds formed depend on the electrons (particles with a negative electrical charge) in each atom. The properties of a compound can be very different from those of the elements it contains. For example, the salt we use in our food is a harmless compound, yet it is made up of two dangerous elements – sodium, which reacts violently with air, and chlorine, which is poisonous in large quantities.

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A chemical reaction occurs when substances change into new substances. For this to happen, the bonds between atoms and molecules must break and re-form in different ways. Because the bonds can be strong, energy, usually in the form of heat, is often needed to start a reaction. The new substances have properties different from those of the original substances. Chemical reactions do not occur only in laboratories; they happen all around us – for example, when cars rust and when food is cooked.

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The Italian physicist Alessandro Volta was a pioneer in the development of electricity. 1_______. His work impressed the French leader Napoleon Bonaparte, who made him a count. 2_______. Volta also studied the properties of air. 3_______. This work was largely ignored, and the same idea was later advanced by others. 4_______.