A science-and-news query that stays high in every country. This page has 100 important questions and answers. Original explainer for daily search — not a government login or live tracker.
Climate is the long-term pattern of weather; climate change is a shift in those patterns. Today’s global warming is driven mainly by greenhouse gases from burning coal, oil, and gas, plus deforestation. The IPCC assesses the science for governments.
Weather is Tuesday’s storm. Climate is the 30-year story. One cold week does not “disprove” a warming trend any more than one hot day proves it alone.
100 important questions. Quick 10 is a random set; Full set plays every question.
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100 questions and answers
Each item is a 4-option MCQ. Open a question, tap A–D. Green is correct, red is wrong. Original explainers — not copied match reports.
1. Carbon dioxide from burned coal, oil, and gas
Tap A, B, C or D.
Answer: B) is the main long-lived driver of current warming
Land-use change adds more.
2. Methane is a greenhouse gas often linked to
Tap A, B, C or D.
Answer: B) leaks, wetlands, and livestock
It is stronger per molecule than CO2 over a short horizon.
3. The Paris Agreement is
Tap A, B, C or D.
Answer: D) a global pact to limit warming and review pledges
National plans (NDCs) sit under it.
4. Governments often discuss holding warming near
Tap A, B, C or D.
Answer: B) 1.5°C or well below 2°C above pre-industrial levels
Those are policy targets, not a guarantee.
5. Albedo is
Tap A, B, C or D.
Answer: C) how much sunlight a surface reflects
Ice is brighter than open water.
6. Sea level rises because of
Tap A, B, C or D.
Answer: A) warmer water expanding plus land ice adding volume
Local rise also depends on land motion.
7. Ocean acidification happens when
Tap A, B, C or D.
Answer: B) dissolved CO2 changes seawater chemistry
Shell-building life can struggle.
8. A positive climate feedback is
Tap A, B, C or D.
Answer: C) a process that amplifies an initial warming
Permafrost carbon release is a feared example.
9. Mitigation means
Tap A, B, C or D.
Answer: C) cutting emissions or raising removals
Adaptation is living with impacts.
10. A carbon price (tax or permit) tries to
Tap A, B, C or D.
Answer: B) make emitting cost money so firms cut it
Design details are political.
11. Renewable electricity commonly includes
Tap A, B, C or D.
Answer: A) wind, solar, and many hydro plants
Firm power and grids still need planning.
12. Afforestation can be a sink if
Tap A, B, C or D.
Answer: A) trees grow and are not soon cleared or burned
Land and water limits apply.
13. The Keeling curve is famous for
Tap A, B, C or D.
Answer: D) showing rising atmospheric CO2 at Mauna Loa
Seasonal wiggles sit on a rising trend.
14. Pre-industrial CO2 was about
Tap A, B, C or D.
Answer: B) 280 ppm; it is now much higher
The exact current ppm changes; the direction is up.
15. El Niño is
Tap A, B, C or D.
Answer: A) a Pacific variability pattern, not the whole long-term trend
It can add a hot year on top of the trend.
16. Arctic amplification means
Tap A, B, C or D.
Answer: D) the far north has warmed faster than the global mean
Loss of bright ice is one reason.
17. Attribution studies ask
Tap A, B, C or D.
Answer: A) how much more likely an extreme was because of warming
One storm is still not the whole climate.
18. Deforestation raises warming by
Tap A, B, C or D.
Answer: C) releasing carbon and cutting a sink
Tropical clearing is a large term.
19. Nitrous oxide is
Tap A, B, C or D.
Answer: C) another greenhouse gas, including from fertiliser
Agriculture policy meets climate policy here.
20. A carbon sink is not
Tap A, B, C or D.
Answer: C) a bank account
Sinks can saturate or reverse.
21. Heatwaves becoming more likely is
Tap A, B, C or D.
Answer: A) a robust expectation on a warmer baseline
A cold week does not cancel the shift.
22. Thermal expansion of seawater is
Tap A, B, C or D.
Answer: D) water taking more volume as it warms
It is a big slice of observed rise.
23. Scope 1 emissions (in firm talk) are
Tap A, B, C or D.
Answer: B) direct emissions the company owns or controls
Scope 2 is often bought electricity.
24. Net zero means balancing
Tap A, B, C or D.
Answer: B) residual human emissions with removals
Accounting rules are fought over.
25. The IPCC does not
Tap A, B, C or D.
Answer: A) run a single lab that invents the weather
It is a review body.
26. Burning forests for energy is not automatically
Tap A, B, C or D.
Answer: D) carbon-neutral in the year you burn them
Regrowth can take decades.
27. Urban heat islands are
Tap A, B, C or D.
Answer: B) cities running hotter than nearby rural land
They sit on top of the global trend locally.
28. A tipping element (ice sheet, rainforest) is
Tap A, B, C or D.
Answer: A) a system that could shift hard once a threshold is crossed
Risk, not a movie date, is the scientific language.
29. Adaptation examples include
Tap A, B, C or D.
Answer: C) flood walls, heat plans, and crop switches
It does not replace cutting emissions.
30. The greenhouse effect is needed for
Tap A, B, C or D.
Answer: C) a liveable Earth; extra gases overheat it
Venus is the extreme textbook case.
31. Permafrost thaw can release
Tap A, B, C or D.
Answer: A) extra carbon and methane stored in frozen ground
That is a feedback risk.
32. Climate models are
Tap A, B, C or D.
Answer: B) physics-based tools with uncertainty ranges, not crystal balls
They are tested on past climate too.
33. A single snowstorm does not
Tap A, B, C or D.
Answer: B) disprove a multi-decade warming trend
Trends need long records.
34. Electrifying cars and heat helps if
Tap A, B, C or D.
Answer: B) the power mix gets cleaner over time
The whole system matters.
35. Short-lived climate pollutants (methane, soot) are targeted because
Tap A, B, C or D.
Answer: B) cuts can slow near-term warming
CO2 still dominates the long game.
36. Coral bleaching is often linked to
Tap A, B, C or D.
Answer: A) marine heat and other stresses
Recovery is not guaranteed after repeat events.
37. National inventories count
Tap A, B, C or D.
Answer: D) gases emitted (and sometimes absorbed) on a territory
Trade and consumption footprints can differ.
38. Geoengineering ideas (reflect sunlight) are
Tap A, B, C or D.
Answer: C) speculative and risky, not a substitute for cuts
Ethics and side effects are unresolved.
39. Water vapour is a greenhouse gas that
Tap A, B, C or D.
Answer: A) amplifies warming as air holds more moisture
It is a feedback more than a policy lever.
40. Climate justice debates ask
Tap A, B, C or D.
Answer: D) who caused emissions and who is most exposed
Finance for adaptation is part of diplomacy.
41. The useful student distinction is still
Tap A, B, C or D.
Answer: C) weather versus climate, and mitigation versus adaptation
Keep those four words straight in an exam.
42. The official source for “what is climate change” (learn desk, item 1) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
43. The official source for “what is climate change” (learn desk, item 2) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
44. The official source for “what is climate change” (learn desk, item 3) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
45. The official source for “what is climate change” (learn desk, item 4) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
46. The official source for “what is climate change” (learn desk, item 5) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
47. The official source for “what is climate change” (learn desk, item 6) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
48. The official source for “what is climate change” (learn desk, item 7) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
49. The official source for “what is climate change” (learn desk, item 8) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
50. The official source for “what is climate change” (learn desk, item 9) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
51. The official source for “what is climate change” (learn desk, item 10) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
52. The official source for “what is climate change” (learn desk, item 11) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
53. The official source for “what is climate change” (learn desk, item 12) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
54. The official source for “what is climate change” (learn desk, item 13) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
55. The official source for “what is climate change” (learn desk, item 14) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
56. The official source for “what is climate change” (learn desk, item 15) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
57. The official source for “what is climate change” (learn desk, item 16) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
58. The official source for “what is climate change” (learn desk, item 17) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
59. The official source for “what is climate change” (learn desk, item 18) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
60. The official source for “what is climate change” (learn desk, item 19) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
61. The official source for “what is climate change” (learn desk, item 20) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
62. The official source for “what is climate change” (learn desk, item 21) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
63. The official source for “what is climate change” (learn desk, item 22) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
64. The official source for “what is climate change” (learn desk, item 23) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
65. The official source for “what is climate change” (learn desk, item 24) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
66. The official source for “what is climate change” (learn desk, item 25) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
67. The official source for “what is climate change” (learn desk, item 26) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
68. The official source for “what is climate change” (learn desk, item 27) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
69. The official source for “what is climate change” (learn desk, item 28) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
70. The official source for “what is climate change” (learn desk, item 29) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
71. The official source for “what is climate change” (learn desk, item 30) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
72. The official source for “what is climate change” (learn desk, item 31) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
73. The official source for “what is climate change” (learn desk, item 32) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
74. The official source for “what is climate change” (learn desk, item 33) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
75. The official source for “what is climate change” (learn desk, item 34) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
76. The official source for “what is climate change” (learn desk, item 35) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
77. The official source for “what is climate change” (learn desk, item 36) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
78. The official source for “what is climate change” (learn desk, item 37) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
79. The official source for “what is climate change” (learn desk, item 38) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
80. The official source for “what is climate change” (learn desk, item 39) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
81. The official source for “what is climate change” (learn desk, item 40) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
82. The official source for “what is climate change” (learn desk, item 41) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
83. The official source for “what is climate change” (learn desk, item 42) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
84. The official source for “what is climate change” (learn desk, item 43) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
85. The official source for “what is climate change” (learn desk, item 44) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
86. The official source for “what is climate change” (learn desk, item 45) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
87. The official source for “what is climate change” (learn desk, item 46) is
Tap A, B, C or D.
Answer: C) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
88. The official source for “what is climate change” (learn desk, item 47) is
Tap A, B, C or D.
Answer: D) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
89. The official source for “what is climate change” (learn desk, item 48) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
90. The official source for “what is climate change” (learn desk, item 49) is
Tap A, B, C or D.
Answer: B) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
91. The official source for “what is climate change” (learn desk, item 50) is
Tap A, B, C or D.
Answer: A) the authority or standard named on this page’s explainer
GKSchools English practice is original — not an official script.
92. Climate is
Tap A, B, C or D.
Answer: A) the long-run pattern of weather
Think decades, not this afternoon.
93. A main driver of current warming is
Tap A, B, C or D.
Answer: D) greenhouse gases from fossil fuels
CO₂, methane, and others trap heat.
94. The greenhouse effect
Tap A, B, C or D.
Answer: D) lets Earth keep enough heat for life — extra gases overheat it
Venus is the extreme textbook case.
95. IPCC reports
Tap A, B, C or D.
Answer: B) summarise climate science for policymakers
They are assessment reports, not a single lab.
96. A carbon sink
Tap A, B, C or D.
Answer: B) absorbs more carbon than it emits (e.g. a healthy forest)
Oceans also take up a lot of heat and carbon.
97. Adaptation means
Tap A, B, C or D.
Answer: D) living with impacts (flood walls, crops, cooling)
Mitigation means cutting emissions.
98. Net zero means
Tap A, B, C or D.
Answer: D) human-caused emissions balanced by removals
Dates and accounting rules are political fights.
99. A cold snap
Tap A, B, C or D.
Answer: C) is weather, not proof the climate trend reversed
Trends need long records.
100. Weather is the short-term state; climate change is
