Road to IELTS 1 Listening Test 2
4 parts · 40 questions · 30 minutes
Library internet service application
Questions 1–6
Complete the form below. Write NO MORE THAN TWO WORDS AND/OR A NUMBER for each answer.
Application Form for use of Library Internet Service
Family name: Milton
First names: (1) ………………………… Jayne
Address: (2) …………………………
35 Maximilian Way
Whitfield
Post Code: (3) …………………………
Occupation: Nurse
(works the (4) …………………………)
Home phone: N/A
Mobile: 0412 214 418
Type of ID: (5) …………………………
ID number: AZ 1985331
Date of Birth: 25th (6) …………………………
Questions 7–8
Choose TWO letters, A–E. What will the woman use the internet for?
7. Internet use (lower letter)
A trade & exchange
B research
C email
D social networking
E job vacancies
8. Internet use (higher letter)
A trade & exchange
B research
C email
D social networking
E job vacancies
Questions 9–10
Write NO MORE THAN TWO WORDS AND/OR A NUMBER for each answer.
9. How much does it cost to register as an internet user?
10. What is the maximum amount of time allowed per single daily internet session?
Nature Club events
Questions 11–15
Choose the correct letter A, B or C.
11. The guided bushwalk is suitable for
A adults only
B children over 12 and adults
C children over 8 accompanied by a parent
12. On the bird observation outing, it is recommended that you have
A waterproof footwear
B a bird identification book
C binoculars
13. For the trip to the sand dunes, a company will donate
A water
B tools
C gloves
14. The bush tucker excursion will cost (per person)
A $15
B $12
C $7
15. The deadline to register for the bush tucker outing is
A 25 November
B 15 November
C 10 November
Questions 16–20
Complete the table below. Write NO MORE THAN TWO WORDS AND/OR A NUMBER for each answer.
| Activity | Leader | Date | Venue | Time |
|---|---|---|---|---|
| Bush walk | Glenn Ford | (16) ………………………… | Springvale | (17) ………………………… –1pm |
| Bird watching | Joy Black, club (18) ………………………… | 10 September | Camford | 4.30–6.30pm |
| Sand dunes | Rex Rose | 26 November | (19) ………………………… | 8.30–10.30am |
| Bush tucker | Jim Kerr, ranger | 3 December | Carson Hills | 10am–(20) ………………………… |
Science lab safety and record-keeping
Questions 21–25
Complete the sentences below. Write NO MORE THAN TWO WORDS for each answer.
21. Students must follow ………………………… to prevent accidents in the lab.
22. The students have not been using ………………………… while in the lab.
23. Students cannot eat or drink until ………………………… is finished and they have washed their hands.
24. Tessa should tie her hair back to avoid danger when she is working with a ………………………… or chemicals.
25. Students must wear long sleeves and shoes made of ………………………… in the lab.
Questions 26–28
Choose the correct letter A, B or C.
26. Which student is currently using an appropriate notebook?
A Vincent
B Tessa
C Neither student
27. The tutor says that writing observations in complete sentences
A is often not a good use of time
B makes them easier to interpret later
C means that others can understand them
28. The students must write dates
A next to each drawing
B next to each written section
C next to each drawing and written section
Questions 29–30
Choose TWO letters, A–E. Which TWO things must be included in the conclusion to the experiment?
29. Conclusion content (lower letter)
A the questions investigated
B the solutions to the questions
C the student’s own thoughts about the experiment
D the length of time spent on the experiment
E the student’s signature
30. Conclusion content (higher letter)
A the questions investigated
B the solutions to the questions
C the student’s own thoughts about the experiment
D the length of time spent on the experiment
E the student’s signature
Climate change
Questions 31–35
Complete the notes below. Write NO MORE THAN TWO WORDS AND/OR A NUMBER for each answer.
Climate change
HUMAN FACTORS
• Cutting down trees for (31) …………………………
• Industrial Revolution
• (32) …………………………
• Increase in population → deforestation
KNOWN EFFECTS
• Over previous 130 yrs: temp. ↗ by 0.6 °C
• Since Ind. Rev.: CO2 ↗ by 30% & Methane ↗ by (33) ………………………… (from mining, animals, rice paddies)
• N2O ↗ (from (34) ………………………… esp. fertiliser; waste management; car exhausts)
• Greenhouse Effect: gases form (35) ………………………… → heat trapped → Earth warms up
FUTURE EFFECTS
1. Rise in sea levels ← ice melting
Questions 36–37
Complete the notes below. Write NO MORE THAN TWO WORDS AND/OR A NUMBER for each answer.
| Sea level | Number of people at risk |
|---|---|
| 1998 levels | (36) ………………………… |
| +50 cm | 92 million |
| +1 metre | (37) ………………………… |
Questions 38–40
Complete the notes below. Write NO MORE THAN TWO WORDS AND/OR A NUMBER for each answer.
2. Change in (38) ………………………… → more arid areas → population movement to cities
3. Increase in pests and (39) ………………………… e.g. malaria
4. Change in ecosystems: *shift in (40) ………………………… – some die, others multiply
*deserts get hotter & bigger
Answers
1. Lynda
2. Unit 15
3. 5577
4. night shift
5. swipe card
6. September 1975
7. trade & exchange
8. email
9. fifteen dollars
10. 60 minutes
11. children over 12 and adults
12. waterproof footwear
13. water
14. $12
15. 10 November
16. 2 July
17. 9.15 am
18. president
19. observation hut
20. 2 pm
21. safety procedures
22. eye protection
23. clean-up
24. naked flame
25. leather
26. Neither student
27. makes them easier to interpret later
28. next to each drawing and written section
29. the student’s own thoughts about the experiment
30. the student’s signature
31. fuel
32. combustion engine
33. 145%
34. agriculture
35. barrier
36. 46 million
37. 118 million
38. vegetation zones
39. diseases
40. species composition
Explanations
- 1. Lynda
- The woman gives her full name as 'Lynda Jayne Milton'; the clerk guesses the common spelling 'L-i-n-d-a' and she corrects him: 'actually it’s L-Y-N-D-A'. Jayne is already printed, so the gap is the first given name.Common trap: Spelling correction – the wrong spelling 'Linda' is offered first and must be rejected.
- 2. Unit 15
- 'Unit 15, 35 Maximilian Way' – the street and suburb are already printed, so only the unit number is missing.Common trap: Partially printed address – the rest of the address is already on the form, so only the first element counts.
- 3. 5577
- The clerk reads back 'double seven double five' and is corrected: 'you’ve got it round the wrong way. It’s double five double seven' – that is 5577.Common trap: Reversal trap – 7755 is said first and is explicitly the wrong way round.
- 4. night shift
- 'I work as a nurse but I’m on permanent night shift.' The occupation (nurse) is already printed; the bracket asks for the shift.Common trap: Already-printed distractor – 'nurse' is in the same sentence but is already filled in above.
- 5. swipe card
- Asked for photo ID, she offers 'here’s my swipe card for the hospital', so the type of ID is a swipe card.Common trap: Category wording – 'photo ID' is what is asked for, but the answer is the specific document named.
- 6. September 1975
- 'I was born on the 25th September, 1975.' The day (25th) is already printed, so the month and year fill the gap.Common trap: Self-correction – the clerk has written 'the eighth month … August', which the woman says is wrong.
- 7. trade & exchange
- Every option is raised in turn; only two survive. She will use the classifieds – 'Trade and exchange, that kind of thing … Well, I’ll definitely be using it for that' – and her email account for keeping in touch with friends and family.Common trap: Offer-and-reject sequence – three of the five options are suggested by the clerk and turned down by the woman.
- 8. email
- Every option is raised in turn; only two survive. She will use the classifieds – 'Trade and exchange, that kind of thing … Well, I’ll definitely be using it for that' – and her email account for keeping in touch with friends and family.Common trap: Offer-and-reject sequence – three of the five options are suggested by the clerk and turned down by the woman.
- 9. fifteen dollars
- 'we’ve decided to set a one-off payment of fifteen dollars for the initial registration' – 'initial registration' = registering as an internet user.Common trap: Outdated information – 'It used to be free' comes first in the same sentence.
- 10. 60 minutes
- 'one 60-minute session per day' is the limit. The woman's own habits (half an hour, 45 minutes) are not the rule.Common trap: Two rival numbers – the woman guesses 'half an hour' before the answer and mentions 45 minutes after it.
- 11. children over 12 and adults
- Three positions are given in sequence – last year's rule (8+ with a parent), an idea that was rejected (adults only) and the final decision: over the age of 12.Common trap: Chronology trap – both distractors are stated as fact before being superseded by 'however, on reconsideration'.
- 12. waterproof footwear
- 'these are a must' marks the rubber boots as the requirement; the other two items are mentioned but attached to someone else or to a later date.Common trap: Who-brings-what – all three items appear, but only the boots are yours to bring.
- 13. water
- All three items are mentioned in the same paragraph; only the water is given free by an outside business.Common trap: Source-of-supply trap – tools are provided by the club and gloves by you, but neither is a company donation.
- 14. $12
- Three prices are named in order – the first was superseded, the third was rejected as too expensive, and the closing 'so meat and salad it is' confirms 12 dollars.Common trap: Three-price sequence – the decision is confirmed only at the very end with 'so meat and salad it is'.
- 15. 10 November
- Three November dates are given for three different things; 'let us know your intentions' is the booking/registration deadline.Common trap: Three-date cluster – all three options are said within two sentences, each attached to a different deadline.
- 16. 2 July
- 'The bush walk, led by Glenn Ford, is first up in July – on the second of the month.' 'the second of the month' = 2 July.Common trap: Split date – the month is said before the day, with other information in between.
- 17. 9.15 am
- 'this year we’ll be setting off in the morning, at nine fifteen, and we’ll get back at one in the afternoon' – the finish time (1pm) is already printed after the gap.Common trap: Pair of times – 'one in the afternoon' follows immediately but is already in the table as –1pm.
- 18. president
- 'the leader is the president of the Nature Club, our very own Joy Black' – the table prints 'Joy Black, club ___', so the gap is her role.Common trap: Word order – the role is stated before the name, so it is easy to miss while waiting for 'Joy Black'.
- 19. observation hut
- 'we’ll meet at the observation hut at half past eight. That’s the observation hut, 8.30 till 10.30' – the meeting place is the venue; the times are already printed.Common trap: Column confusion – the time (8.30 till 10.30) is repeated right beside the venue but already fills the Time column.
- 20. 2 pm
- 'I expect we’ll wind up at two and you can head for home at that time' – 'wind up' = finish, so the excursion runs 10am–2pm.Common trap: Several times in one paragraph – 10am, 11.30 and 12 o’clock are all mentioned before the finish time.
- 21. safety procedures
- 'we must all abide by certain safety procedures – the last thing we want is for one of our students to get hurt', reinforced by 'observe safety rules and follow directions'. 'abide by' = 'follow'.Common trap: Paraphrase of purpose – 'prevent accidents' appears later as 'accidents can easily be prevented', separated from the answer.
- 22. eye protection
- 'And yet last week you were seen working in the lab without eye protection' – 'without' = 'have not been using'.Common trap: Near-miss item – Tessa answers 'I was wearing my glasses', but prescription glasses are explicitly not safety glasses.
- 23. clean-up
- 'Not even water – at least not until after clean-up. Then, be sure to wash your hands thoroughly' – the order (clean-up, then hand-washing) matches the sentence.Common trap: Sequence wording – hand-washing is mentioned in the same breath but is already printed in the sentence.
- 24. naked flame
- 'it poses a hazard when you’re working with chemicals or a naked flame' – 'poses a hazard' = 'danger'; chemicals is already printed, so the gap is the naked flame.Common trap: Reversed order – the transcript says 'chemicals or a naked flame' but the sentence prints them the other way round.
- 25. leather
- 'The rules clearly state that long-sleeved shirts and leather shoes must be worn.' 'leather shoes' = 'shoes made of leather'.Common trap: Wrong-clothing distractor – the tee-shirt and trainers Vincent actually wore are named in the previous sentence.
- 26. Neither student
- The tutor asks for a bound notebook; both students name something else, and his single reply 'That won’t do' covers both.Common trap: Shared rejection – one short 'That won’t do' rules out both students at once, so it is easy to attach it to only the last speaker.
- 27. makes them easier to interpret later
- The tutor answers the students' objections: full sentences reduce the risk of misinterpreting your own data later, unlike brief notes.Common trap: Objection-then-answer – option A is spoken by a student immediately before the tutor's reply.
- 28. next to each drawing and written section
- The tutor first says to date the sketches; when Tessa checks 'next to each drawing?', he broadens it: 'every sketch and every entry must be dated'.Common trap: Checked-and-widened – Tessa's question restates option A, and the tutor's 'Yes' is followed by the wider rule in the same breath.
- 29. the student’s own thoughts about the experiment
- Vincent lists three things he thinks might belong in a conclusion; the tutor's 'Just write your own ideas or feelings' rules all of them out and adds the signature.Common trap: 'Just' as an exclusion word – the three options Vincent names are all rejected by that single word.
- 30. the student’s signature
- Vincent lists three things he thinks might belong in a conclusion; the tutor's 'Just write your own ideas or feelings' rules all of them out and adds the signature.Common trap: 'Just' as an exclusion word – the three options Vincent names are all rejected by that single word.
- 31. fuel
- 'trees were cut down to provide fuel for fires' – 'cut down' = 'cutting down trees', 'to provide … for' = 'for'.Common trap: Two nouns in a row – 'fires' follows 'fuel' and is the easier word to catch.
- 32. combustion engine
- 'the advent of the Industrial Revolution at the end of the 18th century, combined with the invention of the combustion engine' – the Industrial Revolution is already printed above, so the second human factor is the combustion engine.Common trap: Paired factors – both are in one sentence, but only the second is missing from the notes.
- 33. 145%
- 'Carbon dioxide concentrations have climbed by 30% and methane levels have increased by 145% since the beginning of the Industrial Revolution.' The 30% figure is already printed.Common trap: Two percentages in one sentence – 30% is said first and already appears in the notes.
- 34. agriculture
- 'produced by human-related activities such as agriculture, which uses synthetic nitrogen fertilisers, rubbish disposal systems and vehicle emissions' – the three bracketed items in the notes map onto fertilisers, rubbish disposal and vehicle emissions, so the gap is the first source named.Common trap: Natural-vs-human sources – 'wet tropical forests' is offered first as a natural source and does not belong in a human-activity list.
- 35. barrier
- 'these gases (CO2 and methane) create a barrier in the atmosphere which prevents a proportion of the sun’s rays from being reflected back into space' – 'create' = 'form'.Common trap: Consequence-vs-thing – the rest of the sentence describes what the barrier does, which is already summarised in the notes as 'heat trapped'.
- 36. 46 million
- 'In 1998, it was reported that 46 million people lived in areas at risk of flooding.'Common trap: Number cluster – 92 million and 118 million follow in the next two sentences and belong to the other rows.
- 37. 118 million
- 'a rise of one metre put 118 million people in danger of losing their homes and livelihoods'.Common trap: Paired figures – the 50 cm / 92 million pair is stated immediately before and already fills the row above.
- 38. vegetation zones
- 'there would be a modification of vegetation zones with changes in the boundaries between grassland, shrub land, forest and desert' – 'modification' = 'change in'.Common trap: Word-limit pressure – the four habitat names that follow are tempting but the answer is the two-word category term.
- 39. diseases
- 'an increase in the range and distribution of pests which could bring about an increase in the prevalence of certain diseases' – malaria is then given as the example.Common trap: Example-vs-category – 'malaria' is already printed in the notes as the example, so the gap needs the general term.
- 40. species composition
- 'Global warming will influence species composition – for both fauna and flora – such that some animal species will disappear and others will multiply' – 'influence' = 'shift in', and the rest of the note repeats the same sentence.Common trap: Word-limit pressure – 'fauna and flora' sits between the answer and its explanation and is easy to write instead.
Audio transcripts
Part 1 — Library internet service application
WOMAN: Good morning, I’d like to register to use the internet in the library. MAN: Do you have a library card? WOMAN: Yes, I’ve been a member for 6 months but I’ve never used the internet services before. MAN: No problem. Can I have your full name please? WOMAN: Lynda Jayne Milton. MAN: So, Milton is your surname? WOMAN: Yes. MAN: And Linda, L-i-n-d-a? WOMAN: Well, no, actually it’s L-Y-N-D-A. MAN: Lynda … Jane. WOMAN: And, erm, Jane isn’t spelt J-a-n-e either. It’s J-A-Y-N-E. MAN: Okay, got that … thank you. Now, where do you live, Lynda? WOMAN: Unit 15, 35 Maximilian Way. MAN: That’s in Whitfield, right? I have a cousin who lives in that area. WOMAN: Yes, Whitfield. MAN: And the postcode is double seven double five? WOMAN: Not quite – you’ve got it round the wrong way. It’s double five double seven. MAN: Whoops, okay, moving on now … Do you work or are you at home during the day? WOMAN: Well, both, actually. I work as a nurse but I’m on permanent night shift. MAN: Oh, I see. In that case, we won’t put down your home phone number because I’m sure you don’t want to be disturbed when you’re trying to sleep. WOMAN: Thanks, I appreciate that – you can always leave a message on my mobile if you have to contact me. I have it turned off when I’m sleeping, but I regularly check my voicemail for messages. MAN: And that number is? WOMAN: 0412 214 418 MAN: Good. Now I’ll need to see some form of photo ID – have you got something with you? WOMAN: Yes, just a minute, here’s my swipe card for the hospital. MAN: Thank you. I just need to make a note of the number … AZ 1985331 WOMAN: Is that all you need? MAN: Just one more thing – your date of birth – but I can get that from the card. One moment … WOMAN: Look – I’m afraid you haven’t copied it down correctly. I was born on the 25th September, 1975. MAN: What have I written? Oh yes, I see it now, I’ve got the 25th of the eighth month, but that would make it August … Thanks for spotting the mistake. MAN: Well, that’s the application form done – now, I wonder if you’d mind taking part in a survey we’re doing? WOMAN: That’s fine. What do you want to know? MAN: Basically, we’re trying to find out why people access the internet. I mean, what would you be using it for? Social networking, I suppose. WOMAN: I don’t really think so – I haven’t got the time for something like that. But I do want to keep in touch with friends and family both here and abroad, so I’d mostly be making use of my email account. MAN: I see. A lot of students come in here to do research – is that something that you might be doing? WOMAN: I think the internet is a great tool for research but it’s not something that interests me at the moment. MAN: What about checking out a new job? WOMAN: A lot of my friends use the internet for job hunting and they say it’s the best way to look for a new position – I’m quite settled where I am, though. You can get access to the other classifieds, can’t you? Trade and exchange, that kind of thing … MAN: Yes, and I’m told it’s a very popular way of buying and selling these days. WOMAN: Well, I’ll definitely be using it for that. MAN: Thanks a lot. Now, do you have any questions? WOMAN: Is there a charge for the service? MAN: It used to be free but we’ve decided to set a one-off payment of fifteen dollars for the initial registration. WOMAN: Oh, that’s not bad at all. One more thing … is there a time limit for each session, like half an hour or something? MAN: Oh, it’s better than that – one 60-minute session per day – quite generous really. But we’re very strict about it. WOMAN: I’d rarely spend more than 45 minutes on the internet at any one time so that’ll be more than enough. Thank you.
Part 2 — Nature Club events
SPEAKER: Hi everyone. It’s good to see such a big turnout at our Nature Club session for June. Just before we start this evening’s workshop, I’d like to draw your attention to what we have in store for you in the second half of the year. First of all, the guided bushwalk – this is always a favourite – starting out on the Springvale plateau and continuing down into a section of the state conservation area. Last year, we invited children aged 8 and over if they came with a parent, but the track has been washed out in a few places since then and it can be quite rough, so this year we considered restricting it to adults only … however, on reconsideration, the committee has now decided to recommend it for all bushwalkers who are over the age of 12. Another very popular option is the bird observation walk. We’ll be searching for both migratory and native birds as we walk through tidal marshlands and mangroves and you can expect to get your feet uncomfortably wet and muddy if you don’t wear rubber boots – these are a must. The leader will have a strong pair of binoculars, so we’ll rely on her to name the species for us … and we’ve ordered some bird identification books that you may wish to purchase at a later date. From the bush to the swamp, and now to the sand dunes … Our leader will help us identify plants native to the local area as well as some invasive weed species. We’ll be asking for volunteers to help pull out the weeds where possible, so a pair of sturdy gardening gloves is essential. Spades and other tools will be provided. It could get very hot and you’ll need water – plenty of it – but a local business owner is willing to provide bottled water free of charge. The next outing, bush tucker, is a new one – have you ever wondered what life in this country would have been like two hundred to two thousand years ago? Well, come on this trip and you’ll find out how the indigenous inhabitants used local plants as food and medicine. Because lunch is included in this trip, there will be a small charge per person. We had originally thought 7 dollars would cover the basics – sausages and bread followed by tea and coffee, but then we thought a few different cuts of meat and salad would be nice and that brought the price up to 12 dollars a head. At one stage we even contemplated including seafood, but that would have been a bit too expensive – around 15 dollars – so meat and salad it is. We expect this to be a popular event, so we’ll need advance bookings to organise the catering. Please let us know your intentions by the 10th of November, and be aware that we’ll require pre-payment by the 15th of November. You can still change your mind and get a refund up to the 25th of November but after that date, if you pull out, you’ll forfeit the money paid. Well, now … if you can give me a few more minutes of your time, I’ll fill in a few details for you. The bush walk, led by Glenn Ford, is first up in July – on the second of the month. It’ll start from Springvale as usual but this year we’ll be setting off in the morning, at nine fifteen, and we’ll get back at one in the afternoon. The bird watching expedition is on the tenth of September at Camford and the leader is the president of the Nature Club, our very own Joy Black. If you have any questions at all about bird life, Joy is the person to ask. This is a twilight outing from 4.30 to 6.30. Next up is the trip to the sand dunes on 26 November with Rex Rose. A bit of an early start – especially for those of you with a fair way to travel – but we’ll meet at the observation hut at half past eight. That’s the observation hut, 8.30 till 10.30, and even at that time of the morning it’ll be very hot, so come prepared! The last trip on the programme is the bush tucker excursion on the third of December with ranger Jim Kerr. This will be at Carson Hills and the presentation and demonstration will take place from 10 am till 11.30 but be prepared to stay on for the barbecue and bush tucker lunch at 12 o’clock. I expect we’ll wind up at two and you can head for home at that time. Well, that’s all I have to tell you. A booklet will be mailed out to you later with those events, dates and times – but don’t wait, put them on your calendar now.
Part 3 — Science lab safety and record-keeping
TUTOR: Now Vincent and Tessa, I’ve asked the two of you to come and see me because I’m a bit concerned after that incident in the science lab last week. I realise that neither of you have had much experience in a laboratory before … VINCENT: Well, we mostly just studied theory at high school … TESSA: and we rarely got the opportunity to carry out any experiments. TUTOR: Fair enough. But we must all abide by certain safety procedures – the last thing we want is for one of our students to get hurt. TESSA: We understand that. TUTOR: Our priority is to make sure that the chemistry laboratory is a safe place and, actually, accidents can easily be prevented if you just think about what you’re doing at all times. TESSA: It sounds simple enough. TUTOR: It is if you always use good judgement, observe safety rules and follow directions. VINCENT: We’ve read the rules on the poster inside the lab. TUTOR: And yet last week you were seen working in the lab without eye protection. TESSA: What do you mean? I was wearing my glasses. TUTOR: Prescription glasses are not safety glasses – you must always wear the goggles provided – you’ll find they fit quite comfortably over your ordinary glasses. VINCENT: Oh, I see. TUTOR: Just make a habit of putting them on before you start and keep them on until you are finished. And another thing, never eat or drink while in the laboratory. TESSA: What – not even water? TUTOR: Not even water – at least not until after clean-up. Then, be sure to wash your hands thoroughly with soap and hot water and dry them on a clean towel first. And Tessa, your hair should be tied back when you’re in the lab. TESSA: It’s not that long. TUTOR: Still, it poses a hazard when you’re working with chemicals or a naked flame. If you can’t tie it back or pin it up, see if you can tuck it into a cap or something. TESSA: Yes, I can do that. TUTOR: Thank you. Now, Vincent, last week you wore a tee-shirt and trainers in the lab. The rules clearly state that long-sleeved shirts and leather shoes must be worn. VINCENT: Oh, yes, I remember – I was late getting back from sports practice and I didn’t have time to change. TUTOR: Well, it mustn’t happen again. VINCENT: Okay, I’ll see that it doesn’t. TUTOR: Good. As for the rest of the safety precautions, refer to the safety poster inside the lab and you shouldn’t have any problems. TUTOR: Now, before you go, a word about record-keeping. VINCENT: Oh, good – I was going to ask you about that. TESSA: What’s the best way to keep track of what we’re doing in the lab? TUTOR: Well, obviously, all your observations should be written down – I know you think you won’t forget stuff and you’ll be able to recall it later but generally this turns out not to be the case. Written data, however, are a permanent record. And you must be thorough. Organise and record everything in a bound notebook. TESSA: I use a spiral notebook. VINCENT: And I use a large note pad. TUTOR: That won’t do. A book with binding ensures the pages are not easily removed or lost. Oh, and be sure to write your entries in complete sentences. TESSA: Isn’t that a waste of time? VINCENT: Surely notes are good enough. TUTOR: You might think so but brief notes can be hard to decipher at a later date, whereas with full sentences you are less likely to misinterpret data. VINCENT: I make sketches, you know, simple drawings. TUTOR: That’s a good idea, Vincent, but be sure to date them. TESSA: You want us to write the date next to each drawing? TUTOR: Yes, every sketch and every entry must be dated. TESSA: What about headings? TUTOR: Use the title of the experiment as your first entry. When you have completed your observation entries, answer any questions that have been posed and then, finally, write your conclusion. VINCENT: How do we write a conclusion? Do we need to repeat things like the questions and our findings, or the time it all took? TUTOR: Just write your own ideas or feelings about the experiment as the conclusion. Oh … and remember to sign it! Well, that’s all I have time for today. If you have any questions, ask the lab assistant or come back to me.
Part 4 — Climate change
This lecture in Environmental Studies is on the topic of human influence on climate change. First, I’ll outline some of the factors affecting climate, then go on to discuss what has already occurred, and finish up by speculating on the effects. Previously, we’ve covered how factors such as ocean currents and prevailing winds affect climate change naturally. However, the influence of human activity on climate is what I’ll talk about today. At first, the effect on the climate was relatively small; trees were cut down to provide fuel for fires, and, as we know, trees absorb carbon dioxide and produce oxygen so the amount of carbon dioxide in the atmosphere would have increased – but not noticeably. So, in what ways has human activity really impacted on the climate? A major contributor was the advent of the Industrial Revolution at the end of the 18th century, combined with the invention of the combustion engine. In addition, Earth’s burgeoning population has had a marked effect on climate. The first two factors saw increased amounts of carbon dioxide being released into the atmosphere from the burning of fossil fuels, such as coal and oil. The final one, human expansion, has resulted in deforestation on such a scale that the extra carbon dioxide in the air cannot be soaked up and converted into oxygen by the remaining trees. Okay – so what has already happened? Well, global temperatures have risen by 0.6 degrees Celsius in the last 130 years. Levels of carbon dioxide, methane and nitrous oxide gases have escalated. Carbon dioxide concentrations have climbed by 30% and methane levels have increased by 145% since the beginning of the Industrial Revolution. Gas produced by fossil fuel extraction, livestock and paddy fields is primarily responsible for the growth of methane levels. Nitrous oxide, or N2O, comes from natural sources – wet tropical forests, for instance – but it is also produced by human-related activities such as agriculture, which uses synthetic nitrogen fertilisers, rubbish disposal systems and vehicle emissions. How do gases like carbon dioxide and methane affect the climate? Well, this is what we call the Greenhouse Effect. Under normal conditions, the sun’s rays hit the earth and some are reflected back into space. However, these gases (CO2 and methane) create a barrier in the atmosphere which prevents a proportion of the sun’s rays from being reflected back into space – and, instead, the gases become trapped in the atmosphere. It’s simple really – because the sun’s rays can’t escape, the Earth heats up. What are the possible effects? Firstly, a rise in sea levels: we already know that the Arctic ice cap has melted and shrunk considerably and great chunks of ice have been lost from Antarctica. In 1998, it was reported that 46 million people lived in areas at risk of flooding … and the number of people at risk will increase significantly if sea levels rise. It is estimated that a rise of only 50 centimetres would put that number at 92 million. Further projections would see a rise of one metre put 118 million people in danger of losing their homes and livelihoods – not to mention the loss of prime, fertile farmland. Experts predict a rise of at least 50 centimetres over the next 50 years or so. Secondly, there would be a modification of vegetation zones with changes in the boundaries between grassland, shrub land, forest and desert. This is already causing famine in arid areas of north-eastern Africa, and has instigated – and will continue to instigate – mass movements of people away from dry regions. What we are seeing now is only the first stage, with temporary camps for climate refugees already at overcapacity; in the future, there will be significant migration resulting in extreme overcrowding of towns and cities. Another potentially disastrous effect of climate change is an increase in the range and distribution of pests which could bring about an increase in the prevalence of certain diseases. If we think of the malaria-carrying mosquito, for example, which thrives in warmer regions – at the moment, about 45% of the world’s population is exposed to malaria – but with an increase in temperature, there will be many millions more cases of malaria a year. The last effect I’m going to mention today is the change in ecosystems. Global warming will influence species composition – for both fauna and flora – such that some animal species will disappear and others will multiply; and it’ll be the same for plants and trees. It is predicted that around two-thirds of the world’s forests will undergo major changes of some kind. Scientists also expect deserts will become hotter and, of course, desertification will continue at an increasingly worrying rate and will become harder, if not impossible, to reverse. What can we do to stop the process? Well, that’s the subject of next week’s lecture – so I hope to see you all there.
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