Вопрос № 912154 - Английский язык

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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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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.

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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.

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How many times did Gagarin orbit the Earth?
A Russian cosmonaut (astronaut) named Yuri Gagarin, who graduated from the Air Force school at Orenburg in 1957, made the first manned spaceflight. He was launched into space aboard the spacecraft Vostok 1 on April 12, 1961. He orbited the Earth once in one hour and 29 minutes reaching a maximum altitude of 187 miles (301 kilometres). The ship landed the same day at 10:55 a.m. It was Gagarin’s only space flight.