Answers for “The history of glass” with explanation
| Answers | Keywords | Location | Explanations |
| 1. obsidian
|
early humans, sharp | P1 L1 | From our earliest origins, man has been making use of glass. Historians have discovered that a type of natural glass – obsidian – … was first used as tips for spears.
|
| 2. spears
|
early humans, sharp | P1 L1 | From our earliest origins, man has been making use of glass. Historians have discovered that a type of natural glass – obsidian – … was first used as tips for spears.
|
| 3. beads
|
4000 BC, man-made glass | paragraph 1, lines 8-11 | Archaeologists have even found evidence of man-made glass which dates back to 4000 BC; this took the form of glazes used for coating stone beads.
|
| 4. impurities
|
First century BC, colored | paragraph B, lines 3-5 | The glass made during this time was highly colored due to the impurities of the raw material.
|
| 5. Romans
|
until 476 AD, only, knew | paragraph 2, lines 9-17 | The secret of glass making was taken across Europe by the Romans during this century. However, they guarded the skills and technology required to make glass very closely, and it was not until their empire collapsed in 476 AD that glass-making knowledge became widespread throughout Europe and the Middle East.
|
| 6. lead
|
17th century, George Ravenscroft, | paragraph 3, Line 5-8 | He attempted to counter the effect of clouding that sometimes occurred in blown glass by introducing lead to the raw materials used in the process.
|
| 7. clouding
|
17th century, George Ravenscroft, | paragraph 3, Line 5-8 | He attempted to counter the effect of clouding that sometimes occurred in blown glass by introducing lead to the raw materials used in the process.
|
| 8. taxes
|
Mid-19th century, British glass production | paragraph 4, lines 1-6 | In Britain, the modern glass industry only really started to develop after the repeal of the Excise Act in 1845. Before that time, heavy taxes had been placed on the amount of glass melted in a glasshouse, and were levied continuously from 1745 to 1845. |
| 9. TRUE
|
1887, HM Ashley | Paragraph 5, line 4-8 | …..owner HM Ashley introduced……….
…………..more than three times quicker than any previous production method.
|
| 10. FALSE
|
Michael Owens, fully automated | Paragraph 5, line 8-10 | ………..founder of the Owens Bottle Machine Company.
|
| 11. NOT GIVEN
|
Nowadays, large international manufacturers | — | Not mentioned about large international manufactures |
| 12. TRUE
|
Concern, environment, leading to | paragraph 7, the first few lines | …… and with growing consumer concern for green issues, glass bottles and jars are becoming even more popular.
|
| 13. FALSE | more expensive, produce recycled glass, manufactured | paragraph 7, lines 6-10 | As less energy is needed to melt recycled glass than to melt down raw materials, this also saves fuel and production costs.
|