পাঠ পরিচিতি ও বিশ্লেষণ মানচিত্র
1. Find the main idea by noticing what the text explains repeatedly.
2. Identify the cause and its effects from the stated processes.
3. Separate weather from climate by checking the time scale.
4. Identify the response by deciding whether an action reduces harm or reduces greenhouse-gas emissions.
5. Support every explanation with a short line from the text.
| Focus | Text evidence | What it shows |
|---|---|---|
| Definition | “a long-term change in Earth’s average weather patterns” | Climate change is long-term, not a single event. |
| Main cause | “the rise of greenhouse gases from human activities” | Human activities strengthen warming. |
| Major effects | “melts ice, raises sea levels, and increases the intensity of some extreme events” | A warmer atmosphere changes several parts of the Earth system. |
| Response | “Building stronger embankments in flood-prone areas” | Adaptation reduces harm and supports safety. |
৯.১ শিখনফল ও বিশ্লেষণের ধরন
| Analysis direction | What to look for | Where the evidence appears |
|---|---|---|
| Theme and central idea | What the chapter explains repeatedly and why the topic matters | The definition, causes, effects, and key takeaways |
| Cause and effect | The order from human activity to greenhouse gases and changing weather | The step-by-step process and the coal-power example |
| Weather, climate, and adaptation | The time scale and whether an action reduces harm | The contrast between day-to-day weather and long-term climate, plus the adaptation section |
Type-1: Theme and central idea
Ask three questions: What is changing? Why is it changing? How does it affect life?
The central idea should include the meaning of climate change, the role of human activities, and the effects on people and the natural world.
Evidence: “Climate change is not a distant idea; it affects food, water, health, homes, and jobs.”
What three parts should a complete central idea of this chapter mention?
Solution: It should mention what climate change is, how human activities strengthen warming, and how the change affects people and the natural world.
Evidence: “Climate change is a long-term change in Earth’s average weather patterns.”
Type-2: Cause and effect
Trace the sequence: human activity → greenhouse gases → trapped heat → warming and changing weather patterns.
Do not stop at the first cause; follow the whole chain until you reach an effect on temperature, rainfall, ice, sea level, or extreme events.
Evidence: “More greenhouse gases trap more heat, so the planet’s average temperature rises over time.”
Why does extra carbon dioxide affect the temperature over many years?
Solution: Extra carbon dioxide stays in the atmosphere for a long time and traps more outgoing heat; over many years, this added heat contributes to warmer global temperatures.
Evidence: “It strengthens the greenhouse effect by trapping more outgoing heat.”
Type-3: Weather, climate, and adaptation
Check the time scale first: day-to-day conditions describe weather, while usual conditions over many years describe climate; then ask whether the action reduces harm from climate effects.
Adaptation helps people stay safe and reduce damage, but it does not stop climate change.
Evidence: “It does not stop climate change, but it helps people reduce damage and stay safe.”
Why is choosing a response that reduces damage an example of adaptation?
Solution: It is adaptation because the action adjusts to climate effects that are already happening or cannot be avoided and helps people stay safe.
Evidence: “Adaptation means adjusting to climate effects that are already happening or cannot be avoided.”
- Climate change is a long-term shift in Earth’s average weather patterns.
- Weather describes conditions from day to day, while climate describes usual conditions over many years.
- The main present cause is the rise of greenhouse gases from human activities.
- Burning coal, oil, and gas releases carbon dioxide into the air.
- Greenhouse gases absorb part of Earth’s outgoing heat and keep it in the lower atmosphere.
- More trapped heat raises the planet’s average temperature over time.
- A warmer atmosphere can change rainfall patterns, melt ice, and raise sea levels.
- Climate change can affect food, water, health, homes, and jobs.
- Deforestation reduces the number of trees that absorb carbon dioxide.
- The greenhouse effect is natural, but extra greenhouse gases can trap too much heat.
- Adaptation reduces harm and helps people stay safe, but it does not stop climate change.
- A single hot or cold day cannot describe a place’s climate over decades.
Multiple-choice practice
ক It changes the growing season, so crops may not get water when they need it
খ It makes the soil turn into rock permanently
গ It stops seeds from being useful in any climate
ঘ It means the sun will rise in the west during summer
Correct answer: ক
ক Use more water every day so all plants grow faster
খ Plant crops that need less water and collect rainwater for use later
গ Burn dry leaves to make the soil warmer
ঘ Cut down nearby trees to reduce shade
Correct answer: খ
ক The sea level rises and stronger storms push water farther inland
খ The river stops flowing because all clouds disappear forever
গ The land suddenly becomes higher because of daily heat
ঘ The ocean water turns into fresh water during rainy days
Correct answer: ক
ক Leave lights and fans on in empty rooms to save time later
খ Use energy carefully by turning off unused appliances and choosing efficient devices
গ Keep the fan running all day so the room feels cooler
ঘ Charge every device many times a day even when the battery is full
Correct answer: খ
ক Trees make storms stop completely in every season
খ Trees absorb carbon dioxide, which helps reduce heat trapped in the air
গ Trees create electricity from sunlight without any equipment
ঘ Trees remove all pollution from rivers and ponds
Correct answer: খ
৯.২ বিশ্লেষণের কাঠামো
Step 1: Find the topic that appears repeatedly.
Step 2: Ask what the text says about the topic and why it matters.
Step 3: Notice the writer’s tone from the choice of words and the way information is presented.
Step 4: Look for named people, animals, or other figures; do not add any character that the text does not mention.
Step 5: Check whether an expression is literal or figurative, and support the decision with a short quotation.
Type-১ : Theme and central idea
What is changing? Why is it changing? How does it affect life?
জেনে রাখুন
The theme is climate change and its effects on people and the natural world. A complete central idea should include the long-term change, human causes, and major effects.
Text evidence: “Climate change is a long-term change in Earth’s average weather patterns”
Worked example
Question: What central idea does the chapter develop?
Practice question
Question: Why is climate change not only a temperature problem?
Solution: The text also mentions “rainfall, storms, droughts, sea level, and seasonal patterns”.
∴ Answer: Climate change involves several long-term weather patterns, not temperature alone.
Type-২ : Tone
Topic + word choice + purpose = tone. Ask: Does the text inform, warn, explain, or advise?
জেনে রাখুন
The tone is informative and cautionary. The text explains a scientific process step by step and warns about risks to food, water, health, homes, and jobs.
Text evidence: “The effects of climate change are already visible in rainfall changes, rising seas, stronger heat, and greater risks to health, farming, and homes.”
Worked example
Question: What is the tone of the section explaining the greenhouse effect?
Practice question
Question: Which words show that the text also has a warning tone?
Solution: The text says that extra greenhouse gases “can trap too much heat and push temperatures higher than usual”.
∴ Answer: The warning tone appears when the text describes the harmful result of extra trapped heat.
Type-৩ : Characters and literary devices
First ask: Who acts in the text? Next ask: Is the language literal or figurative? Finally, quote the exact words as evidence.
জেনে রাখুন
This chapter is an explanatory text, not a story. It mentions a farmer, a student, people, and human activities, but it does not develop named fictional characters. Its main explanations use direct scientific language.
Text evidence: “A farmer in coastal Bangladesh can lose an entire rice crop”
Worked example
Question: Is the farmer a developed story character in this chapter?
Practice question
Question: Does the expression “the balance of energy in the Earth system changes” use figurative language?
Solution: It explains a scientific relationship directly. The section does not present a comparison or an imaginative description.
∴ Answer: No. The expression is literal scientific language.
৯.৩ Type-১ : সারসংক্ষেপ ও ঘটনাক্রম
The chapter begins with a local example from coastal Bangladesh and then explains the wider meaning of climate change. A farmer may lose a rice crop when rain, flooding, or saltwater arrives at the wrong time. This shows that climate change affects everyday life, including food, water, health, homes, and jobs. Text evidence: “Climate change is not a distant idea; it affects food, water, health, homes, and jobs.”
Next, the text defines climate change as a long-term change in average weather patterns and separates climate from day-to-day weather. It then follows the movement of heat through the Earth system: sunlight warms Earth, some heat moves back toward space, and greenhouse gases hold part of that heat in the lower atmosphere. Human activities increase some greenhouse gases, causing long-term warming and changes in rainfall, ice, sea level, and extreme events. Text evidence: “More greenhouse gases trap more heat, so the planet’s average temperature rises over time.”
১. Theme শনাক্ত করতে দেখো—কোন ধারণা বারবার ব্যাখ্যা করা হয়েছে এবং কেন তা গুরুত্বপূর্ণ।
২. Tone শনাক্ত করতে দেখো—ভাষা কি তথ্য দিচ্ছে, সতর্ক করছে, নাকি কোনো প্রক্রিয়া বোঝাচ্ছে।
৩. অলংকার শনাক্ত করতে দেখো—ভাষা সরাসরি বৈজ্ঞানিক অর্থে ব্যবহৃত হয়েছে, নাকি তুলনা বা কল্পচিত্র আছে।
৪. প্রতিটি সিদ্ধান্তের পাশে এক লাইনের সঠিক text evidence দাও।
| ক্রম | ঘটনা | গুরুত্ব |
|---|---|---|
| ১ | A coastal farmer faces the risk of losing a rice crop because of heavy rain, flooding, or saltwater intrusion. Evidence: “A farmer in coastal Bangladesh can lose an entire rice crop” | The topic is connected to real effects on people and farming. |
| ২ | The text defines climate change as a long-term change in average weather patterns. Evidence: “Climate change is a long-term change in Earth’s average weather patterns” | It gives the central meaning and distinguishes a long-term pattern from one event. |
| ৩ | Sunlight warms Earth, and Earth sends some heat back as infrared radiation. Evidence: “Sunlight reaches Earth and warms the land and oceans.” | It starts the step-by-step explanation of the Earth’s energy process. |
| ৪ | Greenhouse gases absorb part of the outgoing heat and keep it in the lower atmosphere. Evidence: “Greenhouse gases such as carbon dioxide, methane, and water vapor absorb part of this outgoing heat” | It explains how the greenhouse effect holds heat. |
| ৫ | Human activities increase greenhouse gases through burning fossil fuels and cutting down forests. Evidence: “Today, the main cause is the rise of greenhouse gases from human activities” | It identifies the main human cause of the changing climate. |
| ৬ | The warmer atmosphere changes rainfall, melts ice, raises sea levels, and affects extreme events. Evidence: “A warmer atmosphere changes rainfall patterns, melts ice, raises sea levels” | It shows that climate change has several connected effects. |
| ৭ | People use adaptation measures, such as stronger embankments, to reduce harm. Evidence: “It helps people reduce damage and stay safe.” | It presents a practical response without claiming that adaptation stops climate change. |
Worked example: How does the chapter move from a local problem to a general explanation?
Step 1: Identify the opening situation: a farmer’s rice crop may be damaged by changing conditions.
Step 2: Find the general idea connected to that situation: climate change affects important parts of life.
Step 3: Follow the explanation from greenhouse gases to trapped heat and then to changing weather patterns.
Step 4: Notice the practical response: people can reduce damage and stay safer through adaptation.
∴ Answer: The chapter moves from a coastal farming risk to the definition, cause, effects, and practical response to climate change. Evidence: “It affects food, water, health, homes, and jobs.”
প্রচলিত পদ্ধতি: প্রথমে opening example, তারপর definition, cause, process, effects, and response আলাদা করে চিহ্নিত করতে হয়।
শর্টকাট পদ্ধতি: বারবার আসা ধারণা এবং ক্রমটি মনে রাখো: real-life risk → meaning → greenhouse gases → trapped heat → effects → adaptation. প্রচলিত পদ্ধতিতে ছয়টি অংশ পরীক্ষা করতে হয়; শর্টকাটে এই ধারাটি একবার দেখলেই মূল কাঠামো দ্রুত ধরা যায়।
(অনুশীলনের জন্য অতিরিক্ত) Question: Why does the chapter explain the greenhouse effect before discussing several climate impacts?
Solution: Step 1: The text first describes how outgoing heat is absorbed and kept in the lower atmosphere.
Step 2: It then explains that human activities increase some greenhouse gases.
Step 3: Finally, it connects the extra trapped heat with warming, rainfall changes, melting ice, and rising sea levels.
∴ Answer: The greenhouse-effect explanation gives the cause-and-effect link needed to understand the later impacts. Evidence: “It strengthens the greenhouse effect by trapping more outgoing heat.”
৯.৪ Type-১ অনুশীলন ও উত্তর
১. প্রথমে opening situation চিহ্নিত করো।
২. এরপর climate change-এর definition খুঁজে বের করো।
৩. Human activity থেকে greenhouse gases এবং trapped heat-এর ধারাটি অনুসরণ করো।
৪. শেষে effects ও response আলাদা করো।
Shortcut: real-life risk → meaning → cause → process → effects → response
৯.৫ Type-২ : চরিত্র বিশ্লেষণ
This chapter does not tell a long fictional story, but it presents people through short examples connected with climate change. The farmer represents people whose food and work may be harmed by changing weather, while the student represents a learner who can understand why climate events are becoming more risky. Each point should be supported by a short quotation from the text.
| Character | Traits | Textual evidence |
|---|---|---|
| The farmer | Vulnerable to climate-related risks; connected with farming and food. | “A farmer in coastal Bangladesh can lose an entire rice crop if heavy rain, flooding, or saltwater intrusion arrives at the wrong time in the growing season.” |
| The student | Able to learn about climate change and understand its risks. | “A student who understands climate change can better understand why these events are becoming more risky, not just more uncomfortable.” |
Keep in mind: The conventional method is to read the example, identify the person, describe the person’s role, connect that role with the chapter’s theme, and then prove each statement with a quotation. The quicker method uses three checks: Who is shown? What risk or learning is connected with that person? Which exact line proves it? The conventional method takes four short checks, while the shortcut reaches the same evidence in three checks. The informative and concerned tone is supported by the line, “Climate change is not a distant idea; it affects food, water, health, homes, and jobs.”
Worked example: Analyse the farmer as a character.
Step ১: Identify the character: the farmer is the person shown in the opening example.
Step ২: Identify the situation: the farmer may lose a rice crop when harmful events occur at the wrong time.
Step ৩: Connect the situation with the theme: the example shows that climate change can affect farming and food.
Step ৪: Support the analysis: “A farmer in coastal Bangladesh can lose an entire rice crop if heavy rain, flooding, or saltwater intrusion arrives at the wrong time in the growing season.”
∴ Answer: The farmer is presented as a person whose crop and food production are at risk from heavy rain, flooding, and saltwater intrusion during the growing season.
Practice question: How does the student’s role support the main idea of the chapter?
Solution:
Step ১: Identify the character: the student is a learner who understands climate change.
Step ২: Identify the result: understanding helps the student see why climate events are becoming more risky.
Step ৩: Connect the role with the theme: learning about climate change helps people understand its effects on life.
Step ৪: Give textual evidence: “A student who understands climate change can better understand why these events are becoming more risky, not just more uncomfortable.”
∴ Answer: The student supports the chapter’s main idea by showing that knowledge helps people understand the growing risks of climate-related events.
৯.৬ Type-২ অনুশীলন ও উত্তর
৯.৭ Type-৩ : মূলভাব ও বার্তা (Theme)
Type-1: Theme and central message
Conventional method: Read the whole passage and note the ideas that return in the definition, explanation, examples, and takeaways. The main theme is climate change as a long-term change in weather patterns caused mainly by increased greenhouse gases from human activities, with serious effects on people and nature. The text defines it as “a long-term change in Earth’s average weather patterns, especially temperature, rainfall, and the frequency of extreme weather.”
১. Find the repeated topic: climate change and its effects.
২. Find the main cause: human activities increase greenhouse gases.
৩. Find the results: warming, changing rainfall, melting ice, rising sea levels, and stronger extreme events.
৪. Find the message for life: people need understanding and safe responses.
৫. Support each point with a short quotation from the text.
Shortcut method: Ask three questions: What is changing? Why is it changing? How does it affect life? This method is quicker than reading every detail first, but the conventional method gives fuller support from different parts of the passage. Worked example: What message does the chapter give about climate change?
Step ১: The change concerns many long-term weather patterns, not only temperature: “When the climate changes, a place may get hotter, experience stronger rainfall, longer droughts, or shifting seasons.”
Step ২: Human activity strengthens the change through greenhouse gases: “Today, the main cause is the rise of greenhouse gases from human activities.”
Step ৩: The effects reach daily life: “Climate change is not a distant idea; it affects food, water, health, homes, and jobs.”
∴ Answer: The chapter’s main message is that human activities are strengthening a long-term change in climate, and this change is already affecting people, nature, and important parts of life.
Sub-themes and evidence: The greenhouse effect explains how extra gases increase warming, because “More greenhouse gases trap more heat, so the planet’s average temperature rises over time.” The difference between weather and climate prevents confusion, since “Weather changes from day to day, but climate describes the usual pattern over many years.” Adaptation gives the practical message that people can reduce harm, because “It does not stop climate change, but it helps people reduce damage and stay safe.”
- Practice question: Why is the chapter’s message important for a coastal farmer?
- Solution: The message is important because climate-related changes can threaten food production. The text says, “A farmer in coastal Bangladesh can lose an entire rice crop if heavy rain, flooding, or saltwater intrusion arrives at the wrong time in the growing season.” Therefore, understanding the theme helps explain why changing climate patterns can create risks for farming and food.
৯.৮ Type-৩ অনুশীলন ও উত্তর
৯.৯ Type-৪ : ভাষা, অলংকার ও সুর
এই অংশে অধ্যায়ের ভাষা, অলংকার, চিত্রকল্প, লেখকের সুর এবং দৃষ্টিভঙ্গি পাঠ্যাংশের প্রমাণ দিয়ে বিশ্লেষণ করা হবে। পাঠ্যটি মূলত তথ্যভিত্তিক ও সতর্কতামূলক; তাই বক্তব্য বোঝার সময় ব্যবহৃত শব্দ, ক্রিয়াপদ এবং জলবায়ু-সম্পর্কিত দৃশ্যের দিকে নজর দিতে হবে।
১. বারবার বোঝানো মূল বিষয় খুঁজে theme শনাক্ত করো।
২. শব্দের আক্ষরিক অর্থের বাইরে তুলনা বা চিত্র তৈরি হচ্ছে কি না দেখো।
৩. লেখকের সতর্কতা, গুরুত্ব আরোপ এবং সাহায্যের বার্তা দেখে tone নির্ণয় করো।
৪. প্রতিটি সিদ্ধান্তের পাশে পাঠ্যাংশের একটি ছোট উদ্ধৃতি দাও।
Type-১ : Theme ও tone
জেনে রাখুন: প্রচলিত পদ্ধতিতে প্রথমে সংজ্ঞা, কারণ ও প্রভাব আলাদা করে পড়তে হয়। তারপর দেখা হয় লেখক বিষয়টিকে কীভাবে উপস্থাপন করেছেন। এখানে “Climate change is not a distant idea” এবং “it affects food, water, health, homes, and jobs” — এই বক্তব্যগুলো দেখায় যে লেখক বিষয়টিকে বর্তমান জীবনের সঙ্গে যুক্ত ও গুরুত্বপূর্ণ হিসেবে উপস্থাপন করেছেন। ফলে tone হলো informative, serious and concerned; দৃষ্টিভঙ্গি হলো মানুষ ও প্রকৃতির নিরাপত্তার পক্ষে।
সমাধানকৃত উদাহরণ: প্রশ্ন: লেখকের সুর কীভাবে বোঝা যায়?
ধাপ ১: বিষয়টি কেবল ভবিষ্যতের নয়—এ কথা খুঁজে বের করি।
ধাপ ২: মানুষের জীবনে প্রভাবের তালিকা দেখি।
ধাপ ৩: সতর্কতামূলক শব্দ ও ক্ষতির উদাহরণ মিলিয়ে tone নির্ণয় করি।
উত্তর: The tone is serious and concerned because the text warns about present risks to people and nature. প্রমাণ: “Climate change is not a distant idea; it affects food, water, health, homes, and jobs.”
শর্টকাটে সময়: “বর্তমান সমস্যা + মানুষের ক্ষতি + নিরাপদ প্রতিক্রিয়া” এই তিনটি সংকেত দেখলেই theme ও tone দ্রুত চেনা যায়।
অনুশীলন প্রশ্ন: What is the main viewpoint of the text?
সমাধান: প্রচলিত পদ্ধতিতে সংজ্ঞা, মানবিক প্রভাব এবং করণীয়—এই তিন অংশ মিলিয়ে উত্তর দিতে হবে। সংজ্ঞায় দীর্ঘমেয়াদি পরিবর্তন, প্রভাবে খাদ্য ও ঘরের ঝুঁকি, আর adaptation অংশে নিরাপত্তার কথা আছে।
∴ The text presents climate change as a serious human and environmental problem that requires understanding and safe responses.
প্রমাণ: “It does not stop climate change, but it helps people reduce damage and stay safe.”
Type-২ : অলংকার ও চিত্রকল্প
জেনে রাখুন: এই পাঠ্যাংশে স্পষ্ট উপমা বা “like/as” ব্যবহার নেই। “greenhouse effect” একটি ব্যাখ্যামূলক রূপকধর্মী পরিভাষা; এটি অতিরিক্ত গ্যাসের তাপ আটকে রাখার ধারণা বোঝায়। “heavy rain, flooding, or saltwater intrusion” এবং “melts ice, raises sea levels” চোখে দেখা যায় এমন চিত্রকল্প তৈরি করে। ব্যক্তিত্বারোপের স্পষ্ট উদাহরণ নেই, তাই তা জোর করে নির্ধারণ করা উচিত নয়।
অলংকার ও প্রভাবের ছক
| অলংকার | উদাহরণ | কী প্রভাব ফেলে |
|---|---|---|
| রূপকধর্মী পরিভাষা | “greenhouse effect” | তাপ আটকে থাকার ধারণাটি সহজে বোঝায়। |
| চিত্রকল্প | “heavy rain, flooding, or saltwater intrusion” | কৃষকের বাস্তব ঝুঁকি পাঠকের মনে স্পষ্ট করে। |
| চিত্রকল্প | “melts ice, raises sea levels” | উষ্ণতার দৃশ্যমান প্রভাব দেখায়। |
| উপমা ও ব্যক্তিত্বারোপ | স্পষ্ট উদাহরণ নেই | তাই পাঠ্যাংশে এগুলো আছে বলে দাবি করা যায় না। |
সমাধানকৃত উদাহরণ: প্রশ্ন: “greenhouse effect” পরিভাষাটি কীভাবে বিষয়টি বোঝাতে সাহায্য করে?
প্রচলিত পদ্ধতি: প্রথমে পরিভাষাটির সংজ্ঞা পড়ি, তারপর অতিরিক্ত গ্যাস ও তাপ আটকে থাকার সম্পর্ক খুঁজি। পাঠ্যাংশে বলা হয়েছে, “It becomes a problem when extra greenhouse gases trap too much heat”.
শর্টকাট পদ্ধতি: পরিভাষা → তাপ আটকে থাকা → উষ্ণতা—এই তিন ধাপ মিলিয়ে অর্থ বের করি। এতে আলাদা আলাদা সব উদাহরণ বিশ্লেষণ না করেও দ্রুত উত্তর পাওয়া যায়।
∴ The term “greenhouse effect” makes the heat-trapping process easier to understand and shows why extra greenhouse gases raise temperatures.
প্রমাণ: “More greenhouse gases trap more heat, so the planet’s average temperature rises over time.”
অনুশীলন প্রশ্ন: Which words create the clearest visual image of danger to farming?
সমাধান: প্রচলিত পদ্ধতিতে কৃষকের ফসলের ক্ষতির সঙ্গে যুক্ত প্রাকৃতিক ঘটনাগুলো বাছাই করি। “heavy rain, flooding, or saltwater intrusion” — এই শব্দগুলো একসঙ্গে বৃষ্টি, প্লাবন ও লবণাক্ত পানির দৃশ্য তৈরি করে। শর্টকাটে “কৃষি + প্রাকৃতিক বিপদ” সংকেত দেখলেই উত্তরটি পাওয়া যায়।
∴ The clearest image is created by “heavy rain, flooding, or saltwater intrusion” because these words show how a rice crop can be threatened.
এই বিশ্লেষণ পাঠ্যাংশের তথ্যের ওপর নির্ভর করে; স্পষ্ট প্রমাণ না থাকলে কোনো নতুন অলংকার আরোপ করা উচিত নয়।
৯.১০ Type-৪ অনুশীলন ও উত্তর
৯.১১ সাধারণ ভুল ও ফাঁদ
- Climate change is a long-term change in Earth’s average weather patterns.
- Weather changes from day to day, but climate describes the usual pattern over many years.
- Climate change includes changes in temperature, rainfall, and the frequency of extreme weather.
- Burning coal, oil, and gas increases greenhouse gases, especially carbon dioxide.
- Cutting down forests reduces the number of trees that remove carbon dioxide from the air.
- Greenhouse gases absorb part of Earth’s outgoing heat and keep it in the lower atmosphere.
- More greenhouse gases trap more heat, so the planet’s average temperature rises over time.
- A warmer atmosphere can change rainfall patterns, melt ice, and raise sea levels.
- A single cold day cannot describe the average condition of a place over decades.
- Adaptation reduces damage and helps people stay safe, but it does not stop climate change.
Ask three questions: What is changing? Why is it changing? How does it affect life?
Trace the chain: human activity → greenhouse gases → trapped heat → warming and changing weather patterns.
Check the time scale first: short-term conditions describe weather; usual conditions over many years describe climate. Then ask whether the action reduces harm.
| ভুল | কেন ভুল | সঠিক পদ্ধতি |
|---|---|---|
| Climate change means only hotter weather. | The text also includes rainfall, extreme weather, droughts, sea level, and seasonal patterns. | Mention several long-term weather patterns, not temperature alone. |
| One cold or wet event proves a climate pattern. | A short event is weather, while climate requires the usual pattern over many years. | Check the time scale and use long-term evidence. |
| Adaptation stops climate change. | Adaptation reduces damage and supports safety but does not stop the change. | Describe the action as a way to reduce harm from climate effects. |
| An answer gives a cause without explaining the process. | The chapter explains how greenhouse gases trap outgoing heat. | Show the complete chain from human activity to the climate effect. |
| An unsupported quotation is used as evidence. | The quotation may not appear in the chapter. | Use a short, exact line from the provided text. |
৯.১২ অতিরিক্ত অনুশীলন
These questions are additional practice questions based on the chapter text. They are not past-year questions.
Type-১ : Theme and central idea
Ask three questions: What is changing? What causes it? How does it affect life?
জেনে রাখুন: A complete central idea should connect the meaning of climate change with human activities and its effects on people and the natural world.
Worked example: Why does the chapter present climate change as a matter connected with everyday life?
Practice question: What three ideas should a reader include when explaining the central idea of the chapter?
প্রচলিত পদ্ধতি: Read the definition, causes, and effects separately, then combine them into one complete statement.
শর্টকাটে: Use the three questions above; this reaches the main idea more quickly while keeping the same evidence.
Type-২ : Cause and effect
Follow the chain: human activity → greenhouse gases → trapped heat → warming and changing weather patterns.
জেনে রাখুন: Do not jump from an activity directly to the final effect. Show the process between them.
Worked example: How can using a diesel bus add to the greenhouse effect?
Practice question: Why can cutting down forests increase the climate problem?
প্রচলিত পদ্ধতি: Find the activity, explain the missing or added process, and then connect it to the final climate effect.
শর্টকাটে: Follow the four-arrow chain; it is faster because the cause-and-effect order is already arranged.
Type-৩ : Weather and climate
Check the time scale first: short-term conditions describe weather; usual conditions over many years describe climate.
জেনে রাখুন: One season or one event cannot establish a long-term climate pattern.
Worked example: Can one unusually dry growing season alone prove that a place’s climate has changed?
Practice question: Why can changing seasons be part of climate change?
প্রচলিত পদ্ধতি: First identify how long the condition lasts, and then compare it with the definition of weather and climate.
শর্টকাটে: Use “time scale → weather or climate”; this gives a quicker classification.
Type-৪ : Adaptation and response
Ask what the action is meant to do: reducing harm from an effect is adaptation; it does not remove the cause.
জেনে রাখুন: Adaptation helps people face climate effects that are already happening or cannot be avoided.
Worked example: Why can building stronger embankments help a flood-prone community?
Practice question: A coastal farmer faces saltwater intrusion during the growing season. Why is preparing for the risk an example of adaptation?
প্রচলিত পদ্ধতি: Identify the climate effect, explain the harm, and then show how the action reduces that harm.
শর্টকাটে: Check the action’s purpose first; if its purpose is safety or damage reduction, classify it as adaptation more quickly.
Type-৫ : Correcting a misconception
Find the mistaken idea, replace it with the chapter’s accurate idea, and support the correction with evidence.
জেনে রাখুন: Climate change is not only a future problem; the chapter describes effects that are already influencing lives.
Worked example: Why is the statement “Climate change will matter only in the future” incorrect?
Practice question: Why is the idea “Climate change means only hotter weather” incomplete?
প্রচলিত পদ্ধতি: Locate the mistaken claim, compare it with the chapter’s details, and write a corrected claim supported by evidence.
শর্টকাটে: Use “mistake → correction → quotation”; this gives a brief but complete answer.