Презентация "Нахождение металлов в природе", 8 класс

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Where do we find metals? 17.01.2019

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Task 1. Answer the questions and write down the answers in the notebook: •1. Where used metals? •2. People, what professions work with metals?

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•Металлы применяются в жизни людей. Из металлов делают ножи, стулья, столы, машины и многое другое. Metals used in people's lives. Of metals, make knives, chairs, tables, machines and much more. •С металлами работают люди многих профессий. Например, это металлурги, сварщики, автомеханики, водопроводчики, повара. Many people work with metals. For example, they are metallurgists, welders, auto mechanics, plumbers, cooks.

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Task 2. Work with the text: Read and translate. •Metals are found in nature in a free state, they are called native metals, and in the form of compounds. In a native state in nature, there are gold, silver, copper, platinum and mercury. However, often metals found in nature in the form of compounds. There are hundreds of different types of rock.

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Different types of rock: •Limestone (известняк) is a fairly hard rock made from calcium carbonate. •Granite (гранит) is a very hard rock. •Sandstone (песчаник) is a soft rock. You can scratch it with your nails. •Chalk (мел) is a soft rock made from calcium carbonate. You can rub bits off easily. •Marble (мрамор) is a rock made from calcium carbonate crystals. You can smooth and polish it. •Slate (сланец) is a hard rock made of layers. It splits easily into sheets.

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What types of rocks are used for buildings in the area where you live? •В строительстве зданий используются мрамор, сланец, песок, гранит, глина и другие. •In the construction of buildings used marble, slate, sand, granite, clay and others.

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•When rocks get hot enough, they melt and change into a liquid called magma. This happens to rock inside the Earth. thin crust of solid rock hot molten rock called magma

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•Как вы думаете, какой металл занимает первое место по распространенности в природе? •Самым распространенным металлом в земной коре является алюминий. За ним следует железо, кальций, натрий, калий, магний.

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Металлургия – наука и отрасль промышленности, изучающая получение металлов из руд.

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