Science 8 - Assignment Answer Key

Machine Technology and Society

Total Marks: 16

1. C (1 mark)

2. D (1 mark)

3. Steam boats were used. (1 mark)

4. The windmill was used to operate a pump that provided water from a well. (1 mark)

5. Answers will vary. Some questions should relate to societal and environmental concerns.

Some possible questions are these:

• How much fuel will the car use (every 100 km)?
• How clean are the exhaust emissions?
• How many passengers can the vehicle carry?
• What is the cruising speed of the vehicle?
• How easy is the vehicle to park?
• Is the vehicle attractive?
• How safe are passengers in a collision?
• Between “fill-ups,” how far can you drive?
• How comfortable is the seating?

(4 marks for four questions, at least one of which should relate to societal and environmental concerns)

6. Any reasonable question aimed at establishing the purpose and function of the cart is acceptable. Some examples follow:

• How much weight should the cart support?
• What child-safety equipment should the cart have?
• What type of wheels should be used?
• Should the wire used be vinyl coated?
• How could you prevent theft?

(3 marks)

7. Answers will vary. Bicycles are more environmentally friendly in these ways:

• no harmful emissions
• less road surface construction and maintenance
• less noise
• only a small amount of material and energy needed in manufacture and maintenance
• only a small amount of waste when disposed of

(3 marks)

8. The Alberta environment has a wide range of temperatures, a wide variety of terrains, long distances between places, a variety of natural resources (different types of forest, farmland, oil-bearing structures), water availabilities, recreational opportunities, and so on that could affect the machines people use. (2 marks)