(a) Stone tools : _______ Age.

Ans: Stone

(b) Copper tools and other copper objects : _______ Age.

Ans: Copper

(c) Iron tools and other iron objects : _______ Age.

Ans: Iron

2. Arrange the following in chronological order.

(a) (1) Copper (2) Gold (3) Iron

Ans: (1) Gold (2) Copper (3) Iron

(b) (1) Copper Age (2) Iron Age  (3) Stone Age

Ans: (1) Stone Age (2) Copper Age (3) Iron Age.

3. Write about the consequences of the following events.

(a) Discovery of copper : _______

Ans: Copper was used by humans for making tools and implements.

(b) Invention of the wheel : _______

Ans: The wheel was first used by the potters and later for running bullock carts and chariots.

(c) Use of script : _______

Ans: The script is used for permanent record-keeping, production, and other events.

4. Write notes.

(a) Use of metals

Ans: 

1. Christian Thomsen studied pre-historic artefacts and antique objects and introduced the “Three Age System” for classifying these objects.

2. The objects were classified in the following order:

    a. Stone tools

    b. Copper tools and articles

    c. Iron tools and articles.

3. Gold was the first metal to be used, which is soft. So it could not be used for making tools and implements. 

4. Humans then discovered copper that could be used for these purposes, and thereby the Copper Age began.

(b) Social organization in the ancient cities

Ans: 

1. The roots of culture in cities were in the culture of village settlements of the New Stone Age.

2. The earlier faith system, social life, and festivals became more elaborate in cities.

3. Grand temples were built in many cities. The chiefs of these temples became the chief administrators of these cities. Later, the positions of temple head and king were held by the same individual.