CHAPTER 1

Question 1

What is the difference among primary, secondary and tertiary industries? Give an example of each category.

Answer 1

The primary sector involves extracting or harvesting natural resources such as agriculture and mining.

The secondary sector involves manufacturing or processing the raw materials into finished or semi-finished goods such as textiles, metals and chemicals .

The tertiary sector involves providing services that support the production and distribution of goods such as transportation and banking.

Question 2

Name the three basic categories of materials.

Answer 2

Metals
Ceramics
Polymers

Question 3

How does a shaping process differ from a surface processing operation?

Answer 3

A shaping process changes the geometry of the work (machining) material, while a surface processing operation alters the properties or appearance of the surface of the work (painting or plating).