T Transcripts
059 Unit 4, Reacting to force Exercise C
You are going to listen to Felix, an Engineering student. He is talking about another mechanical property. Listen to his talk and correct the notes.
Some materials are malleable. We can change the shape with a hammer, for example, or in a machine. Malleable materials don’t crack or break easily. Aluminium is very malleable. Steel is quite malleable. Glass is not malleable at all. We use malleable materials to make large machines, such as cars and planes. We also use them for small items, like cooking pots.
060
Unit 4, Reacting to force Pronunciation: Speaking in sense groups
Listen and repeat. Pause in the correct places.
Some materials are malleable. We can change the shape with a hammer, for example, or in a machine. 061
Unit 4, Reacting to force Exercise D
Listen and check your answers. Some materials are ductile. We can change the shape by stretching. Ductile materials don’t crack or break easily. Copper is very ductile. Steel is quite ductile. Plastic is not ductile at all. We use ductile materials to make wire. We also use them to make thin sheets for household goods, like fridges and cookers.
062 Unit 4, Reacting to force Pronunciation: Saying schwa (2)
Listen and repeat. Rubber is an elastic material. It is the best material for tyres. A paper clip is not elastic. Pull it and it opens. But it stays in the new shape. A piece of chewing gum is the same.
063
Unit 5, Starting and stopping Fast and slow Exercise A
Listen and check.
1. a steam engine 2. a racing car 3. a nuclear submarine 4. a space rocket 5. a tram 6. a satellite 7. a jet plane 8. a skateboarder
208
064 Unit 5, Fast and slow Exercise B
Listen and check. The photographs show a number of machines. The connection is … all the machines can move. The steam engine gets energy from steam, of course, while the racing car has an internal combustion engine. This kind of submarine uses nuclear power mostly. The space rocket uses a rocket. A tram is powered by electricity from the overhead cables. Jet planes have jet engines, obviously. The skateboard uses human muscle power to move. Finally, we have the satellite. What is the power source of the satellite? I’ll leave that for a minute.
So which one is the odd one out? Is it the girl on the skateboard? Well, she is human and all the others are not. But she still uses energy to move. Is it the space rocket? That goes up … and eventually comes down. All the others move horizontally – oh, except the submarine. That goes up and down too, doesn’t it? No, for me, the odd one out is the satellite. Why? Because it does not really have an energy source. So why does it keep moving around the Earth? What do you think?
065 Unit 5, Fast and slow Exercise C
Listen and check. Underline the stressed syllable. start stop ascend descend accelerate brake fire up shut down turn on turn off take-off land
066
Unit 5, A problem-solving approach Listening skill: Making notes of interviews
Listen to this extract and look at the notes.
A: Why do you talk about roller coasters? B: Because they show basic principles of engineering. A: Really? How many basic principles? B: Well, three, actually.
067 Unit 5, A problem-solving approach Exercise D
Listen to Part 1 of the interview. Complete the notes. Spencer: Hi. Welcome to Engineering Matters. In the studio this week we have Alice Roberts. She’s an engineer and a writer. Thank you for coming in, Alice. It’s a pleasure.
Alice:
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