Materials in Design and Technology Quiz

What are the different types of plastics commonly used in design and technology?

• Glass, Ceramic, Wood, Paper

• Aluminum, Copper, Steel, Iron

• Nylon, Polyester, Silk, Rayon

• Polyethylene (PE), Polypropylene (PP), Polyvinyl Chloride (PVC), Polystyrene (PS), Polyethylene Terephthalate (PET), Polyurethane (PU), and Acrylonitrile Butadiene Styrene (ABS)

Explain the properties and uses of thermosetting plastics.

• Thermosetting plastics are only used for disposable products and packaging.

• Thermosetting plastics have weak chemical bonds and are easily broken down.

• Thermosetting plastics have strong chemical bonds and cannot be remolded. They are used in electrical insulators, adhesives, and in making durable products like car parts and kitchen utensils.

• Thermosetting plastics can be easily remolded and reshaped multiple times.

Discuss the advantages and disadvantages of using PVC (polyvinyl chloride) in design and technology.

• Advantages include environmental concerns, potential health risks, and high cost.

• Disadvantages include durability, low cost, and versatility.

• Advantages include flexibility, high cost, and limited use.

• Advantages include durability, low cost, and versatility. Disadvantages include environmental concerns and potential health risks during production and disposal.

How are thermoplastics different from thermosetting plastics? Provide examples of each.

• Thermosetting plastics can be reshaped multiple times

• Thermoplastics can be melted and reformed multiple times, while thermosetting plastics undergo a chemical change when heated and cannot be reshaped. Examples of thermoplastics include polyethylene and polypropylene, while examples of thermosetting plastics include epoxy and phenolic resins.

• Examples of thermoplastics include epoxy and phenolic resins

• Thermoplastics cannot be melted

What are the environmental impacts of using different types of plastics in design and technology?

• Improved air quality, reduced carbon footprint, and increased resource availability

• Pollution, greenhouse gas emissions, and resource depletion

What are the different methods used to test the mechanical properties of materials in design and technology?

• Flexibility test, conductivity test, viscosity test

• Tension test, compression test, bending test, hardness test, impact test, and fatigue test

• Temperature test, pressure test, density test

• Color test, weight test, size test

Explain the concept of tensile testing and its significance in material testing.

• Tensile testing is a method used to determine the color and texture of a material by applying heat to it. It helps in understanding the material's behavior under different temperatures and is significant in evaluating its suitability for various climates.

• Tensile testing is a method used to determine the strength and elasticity of a material by applying a pulling force to it. It helps in understanding the material's behavior under tension and is significant in evaluating its suitability for various applications.

• Tensile testing is a method used to determine the weight and density of a material by applying pressure to it. It helps in understanding the material's behavior under compression and is significant in evaluating its suitability for various construction projects.

• Tensile testing is a method used to determine the conductivity and resistance of a material by applying an electrical current to it. It helps in understanding the material's behavior under different voltages and is significant in evaluating its suitability for various electronic devices.

Discuss the importance of impact testing in evaluating the toughness of materials.

• Impact testing is important for evaluating the toughness of materials.

• The results of impact testing are not reliable in determining material toughness

• Toughness of materials can be accurately evaluated through visual inspection

• Impact testing has no relevance in evaluating material toughness

What is hardness testing and how is it useful in material testing?

• It is a method to determine the color of a material and is useful in assessing its aesthetic appeal.

• It is a method to determine the resistance of a material to deformation and is useful in assessing strength, wear resistance, and suitability for specific applications.

• It is a method to determine the weight of a material and is useful in assessing its density.

• It is a method to determine the electrical conductivity of a material and is useful in assessing its suitability for electrical applications.

Describe the process of fatigue testing and its relevance in design and technology.

• Fatigue testing is the process of subjecting a material to repeated loading and unloading to simulate real-world usage conditions. It is relevant in design and technology as it helps in determining the endurance limit and fatigue strength of the material, which is crucial in designing reliable and durable products.

• Fatigue testing involves heating a material to extreme temperatures to test its durability.

• Fatigue testing is the process of measuring the weight of a material to determine its strength.

• Fatigue testing is irrelevant in design and technology as it does not provide any useful information.