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Complete the following sentences using information from the text.

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1. When you think of examples of hi-tech materials,…

2. The earliest examples of composite materials…

3. A modern, everyday example is fiberglass…

4. It is used asa reinforcing agent for many polymer products…

5. In 1893, Edward Drummond Libbey exhibited a dress…

6. Glass fibers are useful because of…

7. One of the main attractions of the sport is its simplicity….

5. Match the sentences halves.

  1. Or, to use the correct composite terms, from straw reinforcement- the structural network that reinforces the material inside,
a. composite materials come to mind- such as carbon-fibre, used in aerospace and Formula 1 cars.
  1. When you think of examples of hi-tech materials,
b. but mass manufacture of fibreglass was only made possible with the advent of finer machine-tooling.
  1. Fibreglass (also called fibreglass and glass fibre)
c. and a mud matrix- the material surrounding the reinforcement.
  1. The earliest examples of composite materials were
d. is material made from extremely fine fibers of glass
  1. Glassmakers throughout history have experimented with glass fibers,
e. with a thermal conductivity of 0.05 W/m-K.
  1. It is marketed under the trade name Fiberglas,
f. which has become a genericized trademark.
7. However, the increased surface area makes them g. bricks made from mud and straw.
8. By trapping air within them, blocks of glass fibre make good thermal insulation, h. to catch waves of varying shapes and sizes as they roll in towards the beach.
9. Contemporary surfers use lightweight fibreglass boards i. much more susceptible to chemical attack.

 

6. Answer the following questions.

1. What is the earliest example of composite materials?

2. What is the reinforcement?

3. What does the reinforcement do?                            

4. What is the function of the reinforcement?

5. What is matrix?

6. What is “fiberglass” made of?

7. Who invented "fibreglass" as a material to be used as insulation.?

8. Why are glass fibers useful?

9. In what kind of sports is "fibreglass" used?

UNIT 5

TYPES OF GRAPHS

 

 

 

                        

DESCRIBING TRENDS

Verbs for things going up

                                     Rocket

                                     Jump

                                     Edge up

                                     Soar

                                     Creep up

                                     Peak up (especially for numbers, prices,etc.)

                                     Rise

                                     Increase

Verbs for things going down

                                    Slump

                                    Plunge

                                    Slip back

                                    Slip down

                                    Plummet

                                    Drop

                                    Bottom out (especially when talking about prices)

                                    Fall down    

 

Unstable situation                                    Discrepancy – the difference between two things

                                                                                                  

                                    Fluctuation

                                          Fluctuate




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