Resistant Materials 01
What do insects and fungi do to wood?

Resistant Materials 01

This KS3 Design and Technology quiz looks at resistant materials. In the field of Design and Technology, 'resistant material' is the term used for materials such as wood, plastic and metal. To describe a resistant material, think about its physical properties, appearance and keeping qualities. A material that deteriorates or rots quickly or disintegrates when it gets wet is not classed as being resistant.

Physical properties of a resistant material are very varied. The uses to which they are put usually depends on these properties. For example, a material that is stiff, low density and strong could be used for making an aircraft. When making a lorry or crane, weight is less of an issue but strength is. Matching a material to the job it is designed to do is a very important part of D and T. But it is important to remember that most resistant materials won't last forever. Wood can be attacked by fungus and insects. Ferrous metals will rust and even plastics can be harmed by the UV rays from the Sun which will weaken them and can change their design properties.

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  1. Many plastics become ....... with age.
    They can also become more brittle
  2. Wood is ....... by insects and fungi.
    Water is also a problem with some types of wood
  3. A material with strong physical properties will .......
    Steel, acrylic and nylon are all examples
  4. What does 'ferrous' mean?
    Fe is the symbol for the chemical element iron
  5. Resistant materials that are designed to break down naturally are known as what?
    Designing biodegradable materials helps to avoid long-term pollution. Some resistant materials e.g. wood are naturally biodegradable
  6. Materials are affected by their surroundings. Many metals are ....... by air and water.
    Corrosion is a chemical reaction
  7. A material with stiff physical properties will .......
    These materials are good for making the framework of things
  8. A transparent material is see-through. What is its opposite called?
    Translucent is in-between transparent and opaque
  9. A material with dense physical properties will ......
    Lead is very dense and it is used in the design of nuclear reactors to help to stop radiation from escaping
  10. A material with good thermal physical properties will .......
    Metals are good conductors of heat

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