Select a title for the text from the given below. Prove your reasons
- 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
1In an ordinary … such as metal, vibrations of the atoms impede the flow of electrons that forms an electric current.
2A substance that has a high resistivity will have a low … .
3Diamond conducts heat nearly four times better than copper, yet it is a good electrical … .
4A … is a material that has no electrical or thermal resistance.
5French 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.
1Transition temperature is usually well above ordinary temperatures.
2The phenomenon of superconductivity was discovered in 1957.
3Phonons allow electrons to transport electrical charge without any resistance.
4The highest transition temperature was about 23K until 1911.
5Ceramic 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.
1What is a conductor?
2When is heat generated?
3What creates an electromagnetic field?
4What is an insulator?
5How can conducting materials be classified?