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Category | Format | Size |
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Third Grade Science Volume 1, Textbook Edition | pptx | 6 MB |
Description
"Bricks, Pottery, Porcelain" Materials Around Us PPT Courseware 3
Description of the appearance of bricks, tiles, pottery and porcelain
Description of bricks and tiles:
The bricks are all boxy, a little hard and heavy when pinched, the surface is rough, and the colors of the bricks are different.
Description of Pottery and Porcelain:
There are various shapes, there are more round ones, which look very beautiful, the surface of porcelain is smoother, the surface of pottery is not so smooth, the shape is like a bowl, and it is a bit heavy to hold.
Study the properties of bricks, pottery, and porcelain
Let's review together. In the first four lessons, we learned to compare some characteristics of materials and use certain methods to identify these characteristics. What methods have you learned to identify the characteristics of which materials?
Compare the properties of bricks and tiles with those of pottery and porcelain by studying the hardness, toughness, ease and sinking and floating of materials in water
changes in clay
Brick making process
Bricks, tiles and ceramics are not natural materials, they are artificial materials manufactured by humans. Their manufacturing method is basically the same, they are all made of clay.
Do you know how clay becomes bricks and ceramics? Read textbook p60 to see how bricks and tiles are made, and then look at the courseware about ceramics.
Thinking: After what process, the properties of clay changed?
Summary: After the clay is fired, its properties change and it becomes a solid brick. The clay used to make ceramics is finer and fired at higher temperatures. Let’s find out through the video.
Bricks and tiles - I can describe it like this:
Bricks and tiles are made of clay. The bricks are boxy. The surface of the bricks and tiles is rough, has particles, is uneven in color, is relatively hard, has poor toughness, and has good water absorption. It will sink when placed in water.
Ceramics – I can describe it like this:
Ceramics are made of clay and have different shapes. The surface of the pottery is not as smooth as that of porcelain, it is harder and has poor toughness. Unglazed pottery absorbs water better, while porcelain does not absorb water and will sink when placed in water.
The production of bricks, tiles, pottery, and porcelain requires the consumption of large amounts of clay, coal, and other fuels, which has an impact on the environment.
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For more information about the PPT courseware "Materials Bricks, Tiles, Pottery and Porcelain Around Us", please click the Materials Around Us ppt Bricks, Tiles and Pottery Porcelain ppt tag.
"Bricks, Pottery, Porcelain" Materials Around Us PPT Courseware 2:
"Bricks, Tiles, Pottery, and Porcelain" Materials Around Us PPT Courseware 2 The Production of Pottery Humans began to make pottery in the Neolithic Age, with a history of about eight to nine thousand years. It is a great creation with epoch-making significance in the process of human evolution. In the history of China's ceramic development,...
"Bricks, Pottery, Porcelain" Materials Around Us PPT Courseware:
"Bricks, Tiles, Pottery, and Porcelain" Materials Around Us PPT Courseware Think about it and talk about it. What are the main uses of bricks and tiles? Mainly used in construction, I can describe bricks and tiles like this: The bricks are boxy, the surface of the bricks and tiles is rough, there are particles, and the color is uneven..
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Update Time: 2024-09-11
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