Pearson Edexcel International GCSE in Biology · 4BI1 · Free · no account needed
Global Warming and Deforestation — exam questions
10 original Incandio exam-style questions on Global Warming and Deforestation, 25 marks, about 25 minutes of writing. Each one carries the command word, the tariff and the specification statement it assesses, exactly as a paper presents them. This is an original Incandio practice question, written to reflect the structure and demands of the qualification. It is not an official Pearson Edexcel past-paper question.
This is the practice set for Global Warming and Deforestation — the lesson that teaches it. Read the lesson first if the idea is new; come here when you want to find out whether you can turn it into marks. Completely free, no account needed to read.
What these questions ask of you
7 command words run through this set, and on Pearson Edexcel International GCSE Biology each one means something precise. Answering the wrong command is the commonest way a candidate who understands the lesson still loses the mark.
- Which (1 mark)
- one option chosen from the set given
- State what is meant by (1–2 marks)
- the definition
- Give (1–2 marks)
- a short factual answer drawn from recall or from the data
- Explain (2–4 marks)
- a causal chain — WHY it happens, each link a separate marking point Misread as: describing what happens without giving the reason it happens
- Suggest (1–3 marks)
- a plausible answer applying taught biology to a situation not taught
- Calculate (1–3 marks)
- a numerical answer, with working where the tariff implies steps
- Evaluate (3–6 marks)
- evidence on both sides, then a judgement that follows from it
Assessed on Paper 1 (4BI1/1B) and Paper 2 (4BI1/2B), against AO1, AO2, AO3.
Where these sit in the specification
Pearson Edexcel International GCSE Biology (4BI1) — statements 4.15 · 4.18. Incandio is aligned to this specification; it is not published by, endorsed by or affiliated with Pearson, and it reproduces none of Pearson's wording.
The 10 questions
Answer them on paper, then open the lesson's exam practice to have them marked. The mark scheme, the accepted and rejected answers and the annotated model answer are in Incandio and are not printed here — an answer beside its question is not practice.
-
Table 1 — measurements from two neighbouring hillsides of the same soil type and slope, taken over one year. Hillside P was cleared of forest two years earlier; hillside Q was left forested. Measurement Hillside P (cleared) Hillside Q (forested) Soil washed into the river / tonnes per hectare 31.0 0.4 Nitrate remaining in the topsoil / mg per kg 14 59 Rainfall / mm 1840 1860 Water leaving as run-off / % of rainfall 58 9 (a)
(1)Calculate
Calculate how many times more soil was lost from hillside P than from hillside Q.
Table 1 — measurements from two neighbouring hillsides of the same soil type and slope, taken over one year. Hillside P was cleared of forest two years earlier; hillside Q was left forested. Measurement Hillside P (cleared) Hillside Q (forested) Soil washed into the river / tonnes per hectare 31.0 0.4 Nitrate remaining in the topsoil / mg per kg 14 59 Rainfall / mm 1840 1860 Water leaving as run-off / % of rainfall 58 9 (b)
(3)Explain
Explain the difference in the nitrate remaining in the topsoil of the two hillsides.
Table 1 — measurements from two neighbouring hillsides of the same soil type and slope, taken over one year. Hillside P was cleared of forest two years earlier; hillside Q was left forested. Measurement Hillside P (cleared) Hillside Q (forested) Soil washed into the river / tonnes per hectare 31.0 0.4 Nitrate remaining in the topsoil / mg per kg 14 59 Rainfall / mm 1840 1860 Water leaving as run-off / % of rainfall 58 9 (c)
(2)Suggest
Suggest why the rainfall row was included in Table 1.
Table 1 — measurements from two neighbouring hillsides of the same soil type and slope, taken over one year. Hillside P was cleared of forest two years earlier; hillside Q was left forested. Measurement Hillside P (cleared) Hillside Q (forested) Soil washed into the river / tonnes per hectare 31.0 0.4 Nitrate remaining in the topsoil / mg per kg 14 59 Rainfall / mm 1840 1860 Water leaving as run-off / % of rainfall 58 9 (Total for Question 1 = 6 marks)
-
(1)Which
Which consequence of global warming is described correctly?
Consequence A Sea levels rise as ice melts and sea water expands. B The atmosphere loses its oxygen. C The Earth stops rotating. D All species become extinct at once. (Total for Question 2 = 1 mark)
-
(1)State what is meant by
State what is meant by leaching.
(Total for Question 3 = 1 mark)
-
(2)Give
Give two consequences of a rise in global temperature for living organisms.
(Total for Question 4 = 2 marks)
-
(3)Explain
Explain how an increase in greenhouse gases raises the temperature of the Earth's surface.
(Total for Question 5 = 3 marks)
-
(3)Explain
Explain how removing the trees from a hillside leads to the loss of soil.
(Total for Question 6 = 3 marks)
-
(3)Suggest
Suggest why rainfall often falls in a region for years after a large area of its forest is cleared.
(Total for Question 7 = 3 marks)
-
(6)Evaluate
Evaluate the claim that planting trees is the most effective single action a country can take against rising atmospheric carbon dioxide.
(Total for Question 8 = 6 marks)
Have them marked, then defend the answer
Practice tells you the mark; teaching it back tells you whether you understand it. On Incandio a topic counts as mastered only once you have taught it and defended it.
- Mark these questions — 10 questions, marked on Incandio against the authored scheme, with the mistake you actually made named.
- Teach it — explain Global Warming and Deforestation to Ember, an AI pupil who does not have it yet and asks the awkward question.
- Defend it — argue it against Joseph Priestley over three rounds, marked against descriptors you can read first.
Completely free. No subscriptions, no paywalls, no account needed to start.
Back to the lesson
- Global Warming and Deforestation — What a warmer planet does to living things — and why removing a forest changes the soil, the rainfall and the atmosphere all at once.
- All of Incandio Biology · Incandio Exam Practice