Technology Term 2 - Grade 8 (QUIZ)

Revision Quiz

The positive and negative impact of technology, Forces acting on materials, structures, recycling material

1. What does it mean when we refer to materials that are environmentally friendly?

Materials that harm the environment Materials that are cheap and easy to use Materials that minimize environmental harm and promote sustainability Materials that are recyclable only

2. Which of the following is an example of an eco-friendly material?

Plastic Bamboo Styrofoam Aluminum

3. Why is it beneficial to use materials that are better for the environment?

They are more expensive They help reduce environmental harm and promote sustainability They are easy to manufacture They require no maintenance

4. What does the term “recyclable” mean?

Materials that cannot be reused Materials that can be processed and reused to make new products Materials that decompose in the soil Materials that are cheap to produce

5. How can using eco-friendly materials help reduce pollution?

By reducing waste production By increasing greenhouse gas emissions By being non-biodegradable By promoting harmful disposal practices

6. Which of the following materials can be used in construction to reduce environmental harm?

Concrete and plastic Bamboo and recycled steel Styrofoam and PVC Fiberglass and aluminum

7. What is one difficulty manufacturers might face when working with eco-friendly materials?

Lack of demand Higher initial production costs Limited availability of conventional materials Complex recycling processes

8. How can using environmentally friendly materials lessen the negative effects of technology on the environment?

By increasing carbon footprints By using sustainable alternatives like recycled metals and biodegradable plastics By replacing renewable energy sources By discarding materials easily

9. How could schools encourage the use of eco-friendly materials in their projects?

By banning all materials except plastic By providing eco-friendly materials and organizing awareness campaigns By allowing only teachers to decide materials for projects By promoting materials that are not cost-effective

10. What does it mean to recycle waste?

To burn waste materials To use waste materials to create new products To bury waste in landfills To mix waste with chemicals

11. What is one advantage of recycling?

Increases waste production Reduces the need for natural resources Promotes the use of non-recyclable materials Decreases product quality

12. Which of the following materials can be recycled?

Paper, glass, plastic Oil, gas, coal Styrofoam, concrete, asbestos Lead, mercury, and asbestos

13. What symbol is commonly associated with recycling?

A triangle with arrows A star A square A circle

14. How can recycled plastics be repurposed?

Used to make bricks Used to create reusable bags and furniture Used to produce harmful chemicals Used in landfills

15. What are the key steps involved in recycling paper?

Burning the paper Sorting, pulping, cleaning, and remanufacturing Burying the paper Mixing the paper with other waste

16. Why is it important to include recycling in our daily habits?

To deplete natural resources To reduce environmental harm and waste production To increase landfill size To promote non-recyclable material use

17. How does recycling contribute to the conservation of natural resources?

By reducing the need for raw material extraction By increasing resource exploitation By creating more waste By reducing renewable energy use

18. What is a creative way to turn waste materials into a useful household item?

Make decorations from old newspapers Burn waste materials Store waste in boxes Dispose of waste without reuse

19. What is the main purpose of using a container?

To dispose of materials To store and transport items To recycle waste To increase environmental harm

20. Name one material commonly used for making containers.

Plastic Fabric Straw Cement

21. Why is it essential to design packaging for a specific purpose?

To reduce production costs To meet the needs of the product and consumer To use random materials for packaging To increase the packaging weight

22. Why should research be conducted before designing packaging?

To save time on design To ensure the packaging meets functional, aesthetic, and environmental requirements To avoid innovation in design To use cheaper materials

23. Which of the following are key factors to consider when creating packaging?

Cost and color Durability and sustainability Size and shape only Branding and fonts

24. How does the choice of material influence the design of packaging?

It determines the packaging's strength, cost, and recyclability It has no impact on design decisions It only affects the color of the packaging It limits creativity in design

25. When designing packaging for a glass bottle, which of the following would ensure it is recyclable, protects the bottle, and is easy to carry?

Use Styrofoam and plastic straps Use biodegradable cardboard with cushioning and a handle Use aluminum foil and heavy padding Use non-recyclable plastics and hard glue

26. What is one advantage and one disadvantage of using plastic containers for food packaging?

Advantage: Affordable; Disadvantage: Non-biodegradable Advantage: Heavyweight; Disadvantage: Expensive Advantage: Breakable; Disadvantage: Sustainable Advantage: Difficult to mold; Disadvantage: High durability

27. What are the five main types of forces acting on materials?

Heat, pressure, gravity, wind, and friction Tension, compression, bending, shear, and torsion Magnetism, electricity, bending, heat, and pressure Weight, elasticity, stiffness, friction, and torsion

28. How does tension affect materials?

By compressing the material into smaller sizes By stretching the material, potentially causing it to break By twisting the material without altering its length By bending the material inward

29. How does compression differ from bending?

Compression reduces the material's length; bending curves the material Compression stretches the material; bending straightens it Compression twists the material; bending increases its volume Compression causes flexibility; bending reduces strength

30. What is torsion, and where is it commonly experienced?

A force that compresses materials; commonly seen in buildings A twisting force; commonly experienced in shafts and screws A bending force; commonly seen in bridges A pulling force; commonly seen in textiles

31. Name one material and explain how it is reinforced to withstand forces.

Wood – It is soaked in water to increase flexibility. Concrete – It is reinforced with steel rods to increase strength. Glass – It is painted to improve durability. Plastic – It is heated to become unbreakable.

32. Why is it important to develop a plan before designing a product?

To avoid creating innovative designs To ensure the design meets its purpose and is efficient To reduce the cost of manufacturing To focus only on aesthetics

33. What is graphic communication, and why is it essential in the design process?

Writing instructions for the design process Creating visual representations of ideas to communicate effectively Using verbal communication to describe design ideas Replacing physical prototypes with written descriptions

34. How does using isometric projection improve the design of a product?

By showing only one side of the product By providing a 3D view that helps visualize the design more effectively By eliminating the need for sketches By reducing the material required for manufacturing

35. What are two key considerations when choosing a material for a design?

Color and texture Durability and environmental impact Cost and brand name Size and weight only

36. What is one disadvantage of using a fragile material in your design?

It increases the product’s weight. It may break easily, reducing durability. It makes the product more sustainable. It enhances the product’s flexibility.

37. What are two examples of the negative impact of technology on the environment?

Reducing waste and increasing energy efficiency Pollution from e-waste and increased carbon emissions Creating renewable energy sources and reducing deforestation Using solar panels and wind turbines

38. Which of the following is an example of the positive impact of technology on society?

Increasing pollution from factories Developing renewable energy technologies Reducing the availability of resources Depleting non-renewable energy sources

39. How can thicker, biodegradable plastic bags help the environment?

By increasing landfill waste By decomposing faster and being reusable By using more plastic material By preventing recycling efforts

40. What are two ways in which wastepaper is recycled into new products?

Burning it to generate energy and converting it into fuel Shredding and pulping it to create new paper and packaging materials Burying it in landfills and mixing it with chemicals Melting it into sheets and turning it into glass

41. Suggest one way to minimize the negative impact of a technological product on the environment.

Use more non-recyclable materials Design for durability and recyclability Increase product complexity Avoid repairing products

42. What is the main problem associated with plastic shopping bags?

They are too heavy They cause pollution and take a long time to decompose They are expensive to produce They are difficult to carry

43. What is the role of technology in reducing waste?

Increasing packaging sizes Improving recycling methods and waste management systems Producing single-use items Encouraging product obsolescence

44. How do biodegradable materials differ from non-biodegradable ones?

Biodegradable materials break down naturally over time; non-biodegradable do not Biodegradable materials last forever; non-biodegradable break down quickly Both types last the same amount of time Biodegradable materials are made from plastic only

45. How effective are recycled materials in packaging?

They reduce waste and conserve resources, like recycled cardboard used for boxes They increase pollution They are more expensive and less durable They cannot be used for packaging

46. Suggest a technology project idea focusing on waste reduction in schools. How can it be implemented?

Create a recycling program with bins placed around school and educate students Encourage students to use more disposable products Remove all recycling bins to reduce clutter Ban technology in schools

47. Why is it important to revise challenging topics before an exam?

To avoid understanding the material To improve understanding and boost confidence To skip studying altogether To confuse yourself further

48. How does presenting a model or prototype help in communicating your solution?

It makes ideas abstract and unclear It visually demonstrates the design and how it works It increases project cost without benefit It hides design flaws

49. What criteria are used to evaluate a technology solution?

Cost, functionality, sustainability, and usability Color, size, and brand only Popularity and price only Weight and height only

50. Give two examples of how technology can promote sustainability.

Renewable energy sources and efficient waste recycling Increasing plastic production and deforestation Using non-recyclable materials and fossil fuels Encouraging fast fashion and disposable products

51. Propose a way to teach students about eco-friendly materials through interactive activities.

Organize hands-on workshops where students create items using recycled materials Only give lectures without activities Ignore eco-friendly topics Use only textbooks for teaching

52. What are two ways schools can reduce their environmental footprint?

Implement recycling programs and reduce energy use by turning off lights when not needed Use disposable cutlery and leave lights on all day Increase paper use and waste production Ignore environmental concerns