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IELTS Reading Section Practice Passage - Glass Capturing the Dance of Light

Updated on 25 January, 2023
Mrinal Mandal

Mrinal Mandal

Study Abroad Expert

Glass capturing the dance of light is a passage that you can practice ahead of the IELTS Reading Section. There are sample questions and answers that will help you practice for the examination. 

A - Everyday uses of glass

Glass, in one form or another, has long been in noble service to humans. As one of the most widely used of manufactured materials, and certainly the most versatile, it can be as imposing as a telescope mirror the width of a tennis court or as small and simple as a marble rolling across dirt. The uses of this adaptable material have been broadened dramatically by new technologies glass fibre optics — more than eight million miles — carrying telephone and television signals across nations, glass ceramics serving as the nose cones of missiles and as crowns for teeth; tiny glass beads taking radiation doses inside the body to specific organs, even a new type of glass fashioned of nuclear waste in order to dispose of that unwanted material.

B - Exciting innovations in fibre optics

 On the horizon are optical computers. These could store programs and process information by means of light - pulses from tiny lasers - rather than electrons. And the pulses would travel over glass fibres, not copper wire. These machines could function hundreds of times faster than today’s electronic computers and hold vastly more information. Today fibre optics are used to obtain a clearer image of smaller and smaller objects than ever before - even bacterial viruses. A new generation of optical instruments is emerging that can provide detailed imaging of the inner workings of cells. It is the surge in fibre optic use and in liquid crystal displays that has set the U.S. glass industry (a 16 billion dollar business employing some 150,000 workers) to building new plants to meet demand.

C - Growth in the market for glass crafts

But it is not only in technology and commerce that glass has widened its horizons. The use of glass as art, a tradition spins back at least to Roman times, is also booming. Nearly everywhere, it seems, men and women are blowing glass and creating works of art. I didn’t sell a piece of glass until 1975, Dale Chihuly said, smiling, for in the 18 years since the end of the dry spell, he has become one of the most financially successful artists of the 20th century. He now has a new commission - a glass sculpture for the headquarters building of a pizza company - for which his fee is half a million dollars.

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D - A former glass technology

But not all the glass technology that touches our lives is ultra-modern. Consider the simple light bulb; at the turn of the century most light bulbs were hand blown, and the cost of one was equivalent to half a day’s pay for the average worker. In effect, the invention of the ribbon machine by Corning in the 1920s lighted a nation. The price of a bulb plunged. Small wonder that the machine has been called one of the great mechanical achievements of all time. Yet it is very simple: a narrow ribbon of molten glass travels over a moving belt of steel in which there are holes. The glass sags through the holes and into waiting moulds. Puffs of compressed air then shape the glass. In this way, the envelope of a light bulb is made by a single machine at the rate of 66,000 an hour, as compared with 1,200 a day produced by a team of four glassblowers.

E - What makes glass so adaptable

 The secret of the versatility of glass lies in its interior structure. Although it is rigid, and thus like a solid, the atoms are arranged in a random disordered fashion, characteristic of a liquid. In the melting process, the atoms in the raw materials are disturbed from their normal position in the molecular structure; before they can find their way back to crystalline arrangements the glass cools. This looseness in molecular structure gives the material what engineers call tremendous “formability” which allows technicians to tailor glass to whatever they need.

F - Architectural experiments with glass

Today, scientists continue to experiment with new glass mixtures and building designers test their imaginations with applications of special types of glass. A London architect, Mike Davies, sees even more dramatic buildings using molecular chemistry. “Glass is the great building material of the future, the «dynamic skin»,’ he said. “Think of glass that has been treated to react to electric currents going through it, glass that will change from clear to opaque at the push of a button, that gives you instant curtains. Think of how the tall buildings in New York could perform a symphony of colours as the glass in them is made to change colours instantly.” Glass as instant curtains is available now, but the cost is exorbitant. As for the glass changing colours instantly, that may come true. Mike Davies’s vision may indeed be on the way to fulfillment.

Read more about: Tips For Reading in IELTS Exam | IELTS Academic Reading | IELTS Reading Tips And Tricks | IELTS Reading Band Score IELTS General Reading Test | IELTS Reading Section |

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Questions 1-5

Reading Passage has six paragraphs (A-F).

Choose the most suitable heading/or each paragraph from the list of headings below.

Write the appropriate numbers (i-x) in boxes 1-5 on your answer sheet.

Paragraph A has been done for you as an example.

NB There are more headings than paragraphs so you will not use all of them.

You may use any heading more than once.

ExampleAnswer
Paragraph 1X

List of Headings

i    Growth in the market for glass crafts

ii    Computers and their dependence on glass

iii    What makes glass so adaptable

iv    Historical development of glass

v    Scientists’ dreams cost millions

vi    Architectural experiments with glass

vii    Glass art galleries flourish

viii    Exciting innovations in fibre optics

ix    A former glass technology

x    Everyday uses of glass

1. _____Paragraph    B
1. Answer: viii    (This passage talks about fibre optics and how optical computers and other innovations can be game-changers)

2. _____Paragraph    C
2. Answer: i   (The paragraph talks about the tradition of glass art, while citing the example of Dale Chihuly to highlight the growth of the market)

3. _____Paragraph    D
3. Answer: ix    (The paragraph mentions the ribbon machine and a previous technology that once created ripples)

4. _____Paragraph    E
4. Answer: iii    (The paragraph mentions the interior structure of glass as a reason behind its adaptability and expounds on the concept)

5. _____    Paragraph    F
5. Answer: vi    (From application testing to new mixtures, these are all mentioned in Paragraph F)

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Questions 6-8

The diagram below shows the principle of Coming’s ribbon machine.

Label the diagram by selecting NO MORE THAN THREE WORDS from the Reading Passage to fill each numbered space.

Write your answers in boxes 6-8 on your answer sheet.

_____
Answer: molten glass//ribbon of glass//molten glass ribbon    

(You can refer to Paragraph D for reference on the previous technology embodied by the ribbon machine)

7. _____
Answer: belt of steel//steel belt//moving belt    

(Paragraph D also talks about how a belt of steel is used for the movement of a ribbon of molten glass)

8. _____
Answer: (light bulb) moulds   

(Paragraph D contains more information on the light bulb and how they were crafted with the help of moulds)

Questions 9-13

Look at the list below of the uses of glass.

According to the passage, state whether these uses exist today, will exist in the future or are not mentioned by the writer.

In boxes 9-13 write

A if the uses exist today

B if the uses will exist in the future

C if the uses are not mentioned by the writer

9. _____ dental fittings
Answer: A    (present in the first paragraph)

10. _____ optical computers
Answer: B   (Optical computers are listed in the second paragraph as on the horizon)

11. _____ sculptures
Answer: A    (Paragraph C mentions a glass sculpture by Dale Chihuly)

12. _____ fashions
Answer: C (Nowhere has the use of glass been mentioned for fashions in the passage)

13. _____ curtains
Answer: A (The use of glass for curtains is mentioned in the last paragraph)

Answer Table: 

1. viii8. (lightbulb) moulds
2. i9. A
3. ix10. B
4. iii11. A
5. vi12. C
6. molten glass//ribbon of glass//molten glass ribbon13. A
7. belt of steel//steel belt//moving belt 

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