opens up when a button
is
pressed . At the same time, a smaller window called an aperture
adjusts itself to control the amount
of light. The light is then
absorbed by a sheet of plastic coated in a special chemical. An image is
formed and this can then be
processed and
developed into a two-dimensional paper-based object.
(1 word)
6. A sharp blade inside a plastic container
rotates very quickly. It
chops or
grinds anything it touches,
which we can then use to
produce soup, sauces and dressing. (2 words)
7. This is a very simple object which originated in China. A small piece of paper is
lit with a match. It
burns away until the flame
ignites the chemical compound inside a cardboard tube. The result is a
display of light and colour. (1 word)
B. There are nine more objects hidden in the grid. Choose four of them and write a brief description of how they work, using the bold words and expressions above. There are some more useful words in the answer key (on page 103). Q C A R E N G I N E W E R T T Y U A S D F G H J K L Z X C V B O N M
