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Chapter 15: Problem 2

The letters following each Review Question refer to the corresponding Learning Objective from the Chapter Opener. Why did people use stone weapons before using bronze weapons? (B)

Short Answer

Expert verified
In summary, people used stone weapons before using bronze weapons because, during the Stone Age, stone was the only readily available and practical material for making weapons. With limited knowledge of materials and technologies, early humans relied on stone for its durability and ability to hold sharp edges. As human civilizations advanced and discovered metallurgy, they moved on to bronze, a stronger and more versatile material that allowed for more complex shapes and improved sharpness in weapon-making. The shift from stone to bronze was a significant advancement in technology and human capabilities.

Step by step solution

01

Introduce the historical context

In the past, during the Stone Age period (approximately 2.5 million years ago), human civilizations had limited knowledge of materials and technologies. They primarily used stones in various forms to create hunting and fighting tools due to their availability and practicality.
02

Discuss the properties of stone

Stone, as a material, was readily available in nature and could be easily shaped into sharp tools and weapons. It was also durable and could hold its shape for an extended period. These characteristics made stone a suitable material for making weapons during early human history.
03

Introduce the Bronze Age and technological advancements

The Bronze Age (approximately 3300-1200 BCE) represents a period in human history when people began to use bronze, an alloy of copper and tin, for making weapons and tools. The shift from stone to bronze took place primarily because of advancements in metallurgy, allowing humans to produce stronger and more durable materials for their weapons and tools.
04

Discuss the properties of bronze

Bronze is a metal alloy that is not only stronger and more durable than stone but also has specific characteristics that make it more suitable for weapon-making. For instance, bronze can be cast into more complex shapes than stone, and its sharpness can be improved after repeated use. The use of bronze weapons and tools represented a significant leap in technology and human capabilities.
05

Conclude the explanation

In summary, people used stone weapons before using bronze weapons because it was the best material available to them at the time. As human civilizations advanced and learned more about metallurgy, they discovered that bronze, with its stronger and more durable properties, was a superior material for creating weapons and tools. This shift from stone to bronze marked a significant advancement in technology and human capabilities.

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Most popular questions from this chapter

The letters following each Review Question refer to the corresponding Learning Objective from the Chapter Opener. How can dimension stone be obtained from a quarry? (D)

The letters following each Review Question refer to the corresponding Learning Objective from the Chapter Opener. The costs of mining can be immense. To get a rough sense of this expense, imagine that an ore deposit of a certain metal contains $$0.6 \%$$ grade ore. This means that $$0.6 \%$$ by weight of a block of ore consists of the metal. On the open market, the pure metal sells for $$\$ 8,000 /$$ ton. It costs $$\$ 15 /$$ ton to mine the ore, $$\$ 15 /$$ ton to transport the ore to the processing plant, and $$\$ 15 /$$ ton to process the ore and produce pure metal. Start-up costs (building the mine and building the processing facility) are about $$\$ 100$$ million. How much profit does the company make when it sells a ton of metal? How much ore (in tons) does the operation have to mine to pay back the start-up costs? Considering that a giant dump truck can carry 200 tons of ore at a time, how many dump-truck loads will have been transported at the break-even point? If the mine has eight trucks that can each transport six loads a day, about how many years will it take to break even? (D)

The letters following each Review Question refer to the corresponding Learning Objective from the Chapter Opener. What are strategic minerals, and why have they become a political issue? (F)

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