Language in use
Date: 2015-10-07; view: 411.
UNIT 11 Nanotechnology
1. Match words with their definitions.
| Implant Nanoscale Residue Contaminant Molecule Stain Nanotechnology Synthetic Tar Tissue |
· A substance that makes something dirty
· Something artificial that is put into someone's body in a medical operation
· The smallest particle of a substance that retains all the properties of the substance and is composed of one or more atoms
· Relating to or occurring on a scale of nanometers
· The science of manipulating materials on an atomic or molecular scale especially to build microscopic devices (as robots)
· A substance that remains after a process such as combustion or evaporation
· A coloured patch or dirty mark that is difficult to remove
· Made by chemical synthesis, especially to imitate a natural product
· A dark, thick flammable liquid distilled from wood or coal, consisting of a mixture of hydrocarbons, resins, alcohols, and other compounds. It is used in road-making and for coating and preserving timber
· An aggregate of cells usually of a particular kind together with their intercellular substance that form one of the structural materials of a plant or an animal
2. Match the verbs (l-lO) to the definitions (a-j).
| 1 adjust 2 drain 3 disconnect 4 dismantle 5 examine 6 replace 7 reconnect 8 service 9 tighten 10 top up | a carry out planned maintenance b change an old or damaged part c check carefully d empty a liquid e add more fluid to fill a tank to the recommended level f set up carefully by making small changes g take apart assembled components h apply the correct torque, for example to loose bolts i establish a connection again j remove or isolate from a circuit or network |
3. Read text and complete the exercise
The word nano comes from the ancient Greek word for
‘dwarf' and nanotechnology is the technology used to
control this tiny nano-world and make it useful to us.
In nanotechnology centimeters and even millimeters are too
small for measuring so scientists use a unit called a
nanometer which is one billionth (1,000,000,000) of a meter!
Because a nanometer is so small we cannot see it with our
eyes or even through a traditional microscope.
A human hair is about 50,000 nanometers wide which is
about the smallest thing we can see with our eyes.
Fill in the missing word:
Example:
1. The word nano comes from the ancient
Greek word for D W A R F.
2. A _ _ _ _ _ _ _ _ _ is one billionth of a metre.
3. _ _ _ _ _ are the tiny building blocks of
everything around us.
4. Materials behave _ _ _ _ _ _ _ _ _ _ _at a very small scale.
5. In nanotechnology _ _ _ _ _ _ _ _ _ , physicist, chemists and biologists all work
together to help create new materials and devices.
4. Translate from English into Russian.
molecular- dimension -Quantum -medicine - electronics- biomaterial
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