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MATERIALS They are very important in our everyday life.
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All products we use are made of different materials. Depending on the application we use one material or another. 1. Define "materials" 2. Can you classify them? 3. Write two different categories for metals. 4. Do all plastics behave in the same way with temperature? 5 Which is a harder wood, pine or oak? Why? 6. What types of plastic shapes (sections) can be extruded with an extrusion machine? 7. Could we extrude wood? Why? 8. Is glass transparent? Is it flexible? Is it transparent? Is it waterproof? 9. What materials do you often use? 10. DO YOU THINK MATERIALS CHANGE YOUR LIFE? WHY? Write the answers on your notebook. |