DSE Geography | Climate Change Lesson-Prep Guide (Tutor Edition) | Carbon Footprint and Mitigation versus Adaptation

2026-11-02

Tutor lesson-prep guides · Secondary Geography

Every student can say the planet is warming, yet none can say how much carbon their own year holds or how many trees that means. This lesson turns the topic into three numbers they can compute.

Objectives — Students can: (1) explain the greenhouse mechanism and distinguish it from the enhanced greenhouse effect; (2) compute a personal carbon footprint from electricity and travel, then convert it into trees; (3) give two mitigation and two adaptation measures and say which regions rely on adaptation.

01 Prerequisites (3-minute check)

If any of these fails, fix it before the lesson starts.

Skill	Quick check	Pass mark
Energy balance	How do incoming and outgoing radiation compare over time	Roughly equal
Units	How many kilograms are in a tonne	1,000 kg
Percentages	Write 20% as a decimal	0.2

02 Lesson flow (60 minutes)

Time	Stage	Tutor does	Student does
0-10 min	Radiation balance	Incoming, reflected, absorbed, re-emitted	Draw three arrows
10-24 min	Greenhouse mechanism	Long-wave absorption by gases	Name three gases
24-38 min	Carbon footprint	Electricity and distance factors	4.74 tonnes
38-48 min	Evidence	Temperature, sea level, ice, extremes	One figure each
48-56 min	Responses	Two mitigation, two adaptation	Classify correctly
56-60 min	Exit check	Three questions, marked at once	Done independently

03 Teaching script (read it out)

Scene 1: The greenhouse effect: natural and enhanced

Short-wave solar radiation passes the atmosphere and is absorbed at the surface, which re-emits long-wave radiation; carbon dioxide, methane, water vapour and nitrous oxide absorb that long wave and keep energy in the troposphere, so the surface is warmer than it would be without an atmosphere.
The natural effect is necessary; the problem is that emissions raise greenhouse gas concentrations until incoming energy exceeds outgoing, which is the enhanced greenhouse effect.
Sea level rises about 3.3 mm a year, or 99 mm over thirty years, through thermal expansion and meltwater together.

Ask the student: why nights are milder under cloud (cloud and vapour absorb long-wave radiation).

Scene 2: Carbon footprint: two multiplications

Household electricity of 350 kWh a month at 0.7 kg CO2 per kWh gives 245 kg a month, or 2,940 kg a year.
A car covering 15,000 km a year at 0.12 kg per km gives 1,800 kg.
Total 4,740 kg, that is 4.74 tonnes; one tree absorbs about 22 kg a year, so 215 trees would be needed to offset it.

Ask the student to compute: with electricity cut by a third, the total falls to 3.85 tonnes, still 175 trees.

Scene 3: Mitigation and adaptation: two different answers

Mitigation attacks causes: renewable energy, efficient buildings, public over private transport, carbon pricing.
Adaptation attacks consequences: coastal defences and setback lines, heat-tolerant crops, urban ventilation and greenery, warning and evacuation drills.
Developed regions emit most and owe the deepest cuts; low-lying island states emit little but face the greatest risk, so they depend on adaptation and international support.

Ask the student: can one measure be both (urban greenery cools the city and cuts air-conditioning demand, so it is both).

04 Question types and worked steps

Type	Example	Steps	Answer
Calculation	Household footprint	Electricity x factor + distance x factor	4.74 tonnes
Calculation	Trees to offset	Total emissions divided by uptake per tree	215 trees
Explanation	Enhanced greenhouse effect	Short wave in, long wave absorbed, energy retained	Give the mechanism
Essay	Mitigation versus adaptation	Classify, exemplify, limit	Low-lying states lean on adaptation

Sanity check (teach this): The emission factor is kilograms per kilowatt-hour, so multiplying by kWh gives kilograms; divide by 1,000 only at the end for tonnes. Planting trees does not make a footprint zero, and trees take years to grow. Sea level rises in millimetres a year, so three decades bring only about 0.1 m, never a drowned city.

05 Independent practice (3 questions)

Question	Answer	What to watch
Annual emissions for 350 kWh a month at 0.7	2,940 kg	Multiply by 12
Total including 15,000 km of driving	4.74 tonnes	Add, then divide by 1,000
One mitigation and one adaptation measure	Cut emissions; build defences	Classify before giving examples

06 Common mistakes and what to say

Mistake	Student writes	Say this
Calling the greenhouse effect pollution	Answering that the gases are toxic	It is a radiation process, not a poison.
Forgetting to divide by 1,000	Footprint given as 4,740 tonnes	Kilograms become tonnes by dividing by a thousand.
Swapping the two responses	Counting a sea wall as mitigation	Defences adapt; cutting emissions mitigates.
Overstating the impact	Claiming coasts drown within a decade	Use the rate given in the question.

07 Homework (paper, section and question numbers)

Secondary geography chapter index — All chapters and practice
All lesson-prep guides — Compare other subjects

08 Exit check (last 5 minutes)

Question	Answer	Decision
Annual household emissions at 350 kWh a month	2,940 kg	All three right: move to energy
Trees needed for the total	215	One wrong: reteach units
What mitigation means	Cutting the causes	Two or more wrong: return to act three

09 Tutor FAQ

Must students memorise national emission rankings?

No. Exams supply data; the skill is comparing totals and per-capita figures.

What belongs in a carbon footprint?

Electricity, travel, food and goods, but only the items the question lists.

Why do low-lying states talk about adaptation?

They emit little and cannot cut much, yet face the highest sea-level and storm-surge risk.

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A TutorZone lesson-prep guide. Written by the TutorZone team; questions and lesson flow are original and are not taken from any school or publisher material.