- Discovery of superconductivity
- Superconducting materials
- Properties of a superconductor
5 Study the word collocations with the term superconductor. Translate and memorize them.
- filamentary superconductor
- twisted superconductor
- superconductor rectifier
- soft/hard superconductor
- high-temperature superconductor
- critical field superconductor
Make up 5 sentences of your own using the word-combinations above. Ask your partner to translate them.
Fill in the gaps with an appropriate word given in the box.
superconductor insulator conductivity conductor superconductivity
1 In an ordinary such as metal, vibrations of the atoms impede the flow of electrons that forms an electric current.
2 A substance that has a high resistivity will have a low .
3 Diamond conducts heat nearly four times better than copper, yet it is a good electrical .
4 A is a material that has no electrical or thermal resistance.
5 French researches claim to have achieved at relatively high temperature of 250K.
Translate the following word-combinations paying attention to Attributive group.
- metal oxide temperature
- atom vibrations
- conducting material transition
- conduction electrons
- electric charge transportation
- niobium-germanium alloy
- liquid nitrogen boiling point
- copper oxide ceramic materials
Express your agreement or disagreement with the following statements.
1 Transition temperature is usually well above ordinary temperatures.
2 The phenomenon of superconductivity was discovered in 1957.
3 Phonons allow electrons to transport electrical charge without any resistance.
4 The highest transition temperature was about 23K until 1911.
5 Ceramic materials have low transition temperature.
10 
Speaking task. You are taking a part at a scientific conference. Make a report about superconductivity according to the following plan. While speaking use the expressions below.
- Definition of a superconductor
- Discovery of the phenomenon of superconductivity
- Examples of superconducting materials
| I would like to | Due to/ owing to |
| First of all | Therefore |
| Further | In conclusion I would say that |
| Otherwise | In summary |
| Consequently |
LISTENING
Listen to the text and answer the questions.
1 What is a conductor?
2 When is heat generated?
3 What creates an electromagnetic field?
4 What is an insulator?
5 How can conducting materials be classified?
