3. Do the quiz in pairs. Then check your answers with your teacher.

1. During World War IT (1939-1945), scientists used dandelions (see photo) to make

     a. cardboard.   b. paper   c. plastic   d. rubber  

2. The first bicycles had wheels made of

     a. wood with iron tyres  b. iron with rubber tyres  c. iron with wooden tyres 

3. Which one of these materials did the Ancient Romans not have?

     a. ceramic  b. concrete  c. glass  d. paper 

4. Are these sentences true or false?

     a. All types of wood float in water.

     b. No type of stone floats in water. 

5. The earliest use of nylon was in

     a. women's clothing.     b toothbrushes.     c parachutes.     d. guitar strings. 

6. Which of these metals is the hardest? Which is the heaviest?

     a. aluminium   b. copper    c. gold    d. iron    e. steel 

5. Look at the language for describing technology. Complete the phrases with the words below.

Allows    base      handle      mains      mostly

Describing technology 

Shape straight; rectangular; square; circular; curved; spherical; triangular

Power

It's (1) _____ powered / battery powered / solar powered.

It's cordless / rechargeable.

Construction

It's made  (2) _____ of glass / steel, etc.

It's got wheels / a long (3) _____ / a triangular (4) _____ / a square lid, etc. 

Use

You use it to ... 

It (6) _____ you to …

It prevents you from (+-ing) …