example of a source of electrical energy ? ( ตัวอย่างของแหล่งพลังงานไฟฟ้า นี่คือยังไงอะคะ พอมีตัวอย่างไหม เป็นเรื่อง Electricity ของ M.3 ... อ่านต่อ

The sun heats the earth in the tyres and this heat is stored and slowly release. แปลว่าอะไรหรอคะ

An Earthshiอ = Well, back in the 1970s the first Earthship was designed and built by an architect named Mike Reynolds. He Imagine a home that is made from waste and yet doesn't produce any. Sounds out of this world, doesn't itp) Aง P -The Perfect Green Home wanted to create an environmentally friendly house that would generate its own electricity and heatingมร local materials and recycled products. The first Earthship was built using car tyres, earth, cans and bottles. Today, anyone canท order an Earthshin i- apackage and build it themselves. The package contains everything that is needed except the tyres. But don' Worry. They can be found at most local dumps!! The tyres are used as the Earthship's bricks. They are placed in the shape that you want the house to be and then they are filled with earth. This is the basis of the house's heating system. The sun heats the earth in the tyres and this heat is stored and slowly released. Heat from the sun is also used to create electricity, and rainwater is filtered and stored in tanks under the house. Dirty water from the kitchen and bathroom is also filtered and reused for the toilet. The Earthship is the dream green home. It costs close to nothing, it will be built very quickly and there aren't any bills to pay. So why don't you 15 think about building your own Earthship and help protect the Earth? 1rubbish heaps

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Refer to the table, answer questions 7-9. Table: Some properties of elements at 25C and 1 atm pressure Hardness or Appearance Electricity conductivity Element Melting Boling point (C) toughness point (C) Shiny, silvery liquid Mercury Yes -39 357 Colourless gas Hydrogen No -259 -253 Iron Shiny, silvery solid Hard and tough Yes 1,538 2,861 Sulphur Yellow solid Hard and brittle No 120 445 Sodium Shiny, silvery solid Soft and tough Yes 98 883 Silicon Shiny, silvery solid Hard and brittle Slightly 1,414 3,265 Boron Black Solid Hard and brittle No 2,030 3,900 Chlorine Yellowish green gas No - 102 -35 Bromine Orange red liquid No -7 59 Oxygen Colourless gas No -219 - 183 Magnesium Shiny, silvery solid Hard and tough Yes 650 1,090 lodine Shiny, dark purple Hard and brittle No 113.5 184.5 Solid 7. Which elements are metals and which are non-metals? 8. Is silicon a metal or non-metal or metallloid? Justify your reason. 9. What are the uses of metals, non-metals and metalloids in daily life? Give examples. 0. Blement A is a solid with shiny ธurfaces, good electricity and heat conductivity, the density Or 7.8 g/cm, boiling point of 1,090 C and melting point of 650 C. Is Element A a metal or non-metal? Justify your reasons. 67

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Fill in the blanks with the given words. reinforced concrete insulators cross-linked ceramics melting Superior polymer polymerization non-biodegradable hard inert plastic composite branched monomer 1. A is a large molecule with many repeating smaller unit of the same kind. 2. A is the smaller unit that joins up repeatedly to form a polymer. 3. is a process in which monomers combine chemically to produce a polymer. 4. There are three types of polymers based on their structures, namely linear polymers, polymers and - polymers. 5. synthetic fiber and synthetic rubber are examples of polymers. 6. Generally, synthetic polymers are to chemicals, thermal and electrical เand light. 7. Synthetic polymers can cause pollution because they are 8. are inorganic non-metallic solids that are heated to become hard. 9. Generally, ceramics are strong, inert to chemicals, good insulator of electricity and heat and have high -point. 10. A material is formed when two or more different substances are combined. 11. The properties of composite materials are more properties of the original components. than the 12. Examples of composite materials are and fiberglass. Chapter 3 555 Materials

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