Вопрос № 912153 - Английский язык

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Greenhouse effect is the term for the role the atmosphere in warming the earth's surface. The atmosphere is largely transparent to incoming short-wave solar radiation, which heats the earth's surface. Much of this radiation is reflected back by gases such as carbon dioxide, methane, nitrous oxide and ozone in the atmosphere. This heating effect is at the root of the theories concerning global warming.

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Greenhouse effect is the term for the role the atmosphere in warming the earth's surface. The atmosphere is largely transparent to incoming short-wave solar radiation, which heats the earth's surface. Much of this radiation is reflected back by gases such as carbon dioxide, methane, nitrous oxide and ozone in the atmosphere. This heating effect is at the root of the theories concerning global warming.

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In the space surrounding every magnet there exists what is called a magnetic field. When a strong magnet is brought close to a piece of sort iron, the iron takes on all the properties of a magnet. This phenomenon is called induction and it was discovered by Faraday.

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Cars have an engine and a gearbox. Some cars have a petrol 1_______ and some cars have a diesel engine. Some cars have a manual gearbox and some have an 2_______ gearbox. Most cars (> 50 %) have a petrol engine; most also have a 3_______ gearbox. Cars also have a dynamo and some have an 4_______.

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There are different 1_______ in the picture. Instrument A is known as a 2_______. It’s used for measuring pressure. It has a scale and a pointer. Instrument B is defined as scales. They have two pans. They are used for measuring 3_______. There are different types of scales. Instrument C is known as a ruler. It is used for drawing straight lines and different shapes. It has marks and 4_______ on it.

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How many types of atom does carbon dioxide have?
Aluminium (Al), water (H2O), oxygen (O2) and carbon dioxide (CO2) are substances. Some substances are elements and some substances are compounds. Elements have only one type of atom whereas compounds have more than one type.
Aluminium is an element: it has only one type of atom (i.e. it has only aluminium atoms). Oxygen has only one type of atom, so it is also an element.
Carbon dioxide has two types of atom (carbon and oxygen), so it is a compound. Sulphuric acid (H2SO4) is also a compound: it has three types of atom (hydrogen, sulphur and oxygen). Water is also a compound.