[TOP 70] Earth Day Quiz: we are going to cover earth day quiz questions with answers.
1. When was the first Earth Day celebrated?
a) 1970
b) 1980
c) 1990
d) 2000
Answer: a) 1970
2. What is the largest greenhouse gas emitted by human activities?
a) Carbon dioxide (CO2)
b) Methane (CH4)
c) Nitrous oxide (N2O)
d) Ozone (O3)
Answer: a) Carbon dioxide (CO2)
3. Which of the following energy sources is renewable?
a) Coal
b) Natural gas
c) Solar power
d) Nuclear power
Answer: c) Solar power
4. What percentage of Earth’s water is freshwater available for human use?
a) 10%
b) 25%
c) 50%
d) 75%
Answer: a) 10%
5. What is the process of converting waste materials into reusable materials called?
a) Composting
b) Recycling
c) Incineration
d) Landfilling
Answer: b) Recycling
6. What is the primary cause of ozone depletion in the upper atmosphere?
a) Carbon dioxide (CO2)
b) Methane (CH4)
c) Nitrous oxide (N2O)
d) Chlorofluorocarbons (CFCs)
Answer: d) Chlorofluorocarbons (CFCs)
7. Which of the following is a major contributor to deforestation?
a) Urbanization
b) Mining
c) Agriculture
d) Manufacturing
Answer: c) Agriculture
8. Which gas makes up the majority of Earth’s atmosphere?
a) Oxygen (O2)
b) Carbon dioxide (CO2)
c) Nitrogen (N2)
d) Methane (CH4)
Answer: c) Nitrogen (N2)
9. What is the term used to describe the gradual increase in Earth’s average temperature due to human activities?
a) Global warming
b) Climate change
c) Ozone depletion
d) Acid rain
Answer: b) Climate change
10. Which of the following is a sustainable practice for water conservation?
a) Taking longer showers
b) Using sprinklers during the hottest hours of the day
c) Fixing leaky faucets promptly
d) Leaving taps running while brushing teeth
Answer: c) Fixing leaky faucets promptly
11. Which of the following is a renewable source of energy derived from organic matter?
a) Natural gas
b) Coal
c) Biomass
d) Petroleum
Answer: c) Biomass
12. What is the term for the process of planting trees to restore or create forests?
a) Afforestation
b) Reforestation
c) Deforestation
d) Urbanization
Answer: b) Reforestation
13. Which of the following is a major cause of soil erosion?
a) Overgrazing
b) Fertilizer application
c) Rainfall
d) Forestation
Answer: a) Overgrazing
14. What is the term for the gradual rise in sea levels due to the melting of glaciers and ice caps?
a) Ocean acidification
b) Coastal erosion
c) Sea level rise
d) Coral bleaching
Answer: c) Sea level rise
15. Which of the following is an example of a non-renewable resource?
a) Wind energy
b) Geothermal energy
c) Natural gas
d) Solar energy
Answer: c) Natural gas
16. Which of the following is a major contributor to air pollution in urban areas?
a) Industrial emissions
b) Agricultural practices
c) Household waste
d) Natural disasters
Answer: a) Industrial emissions
17. What is the term for the process of converting organic waste into nutrient-rich soil amendments?
a) Incineration
b) Landfilling
c) Composting
d) Recycling
Answer: c) Composting
18. Which of the following is a key factor contributing to the loss of coral reefs worldwide?
a) Oil drilling
b) Ocean acidification
c) Deforestation
d) Plastic pollution
Answer: b) Ocean acidification
19. What is the term for the practice of using fewer resources and generating less waste?
a) Sustainability
b) Conservation
c) Renewable energy
d) Circular economy
Answer: b) Conservation
20. Which of the following is a greenhouse gas that is released during rice cultivation and livestock production?
a) Carbon dioxide (CO2)
b) Methane (CH4)
c) Nitrous oxide (N2O)
d) Ozone (O3)
Answer: b) Methane (CH4)
21. Which of the following is a significant cause of water pollution in many regions?
a) Industrial waste
b) Deforestation
c) Acid rain
d) Wind erosion
Answer: a) Industrial waste
22. What is the term for the loss of a species from a particular habitat or from the entire planet?
a) Extinction
b) Endangerment
c) Overpopulation
d) Migration
Answer: a) Extinction
23. Which of the following is an example of a renewable resource?
a) Natural gas
b) Coal
c) Wind power
d) Uranium
Answer: c) Wind power
24. What is the term for the gradual deterioration of land and its productivity through human activities?
a) Desertification
b) Pollution
c) Eutrophication
d) Urbanization
Answer: a) Desertification
25. Which of the following actions can help reduce carbon footprint?
a) Using energy-efficient appliances
b) Driving larger vehicles
c) Keeping lights on when not needed
d) Increasing air travel
Answer: a) Using energy-efficient appliances
26. What is the term for the process of converting sunlight into electrical energy using photovoltaic cells?
a) Geothermal energy
b) Solar power
c) Hydroelectric power
d) Nuclear energy
Answer: b) Solar power
27. Which of the following is a major cause of water scarcity in many regions?
a) Overpopulation
b) Desalination
c) Droughts
d) Water pollution
Answer: c) Droughts
28. What is the term for the loss of fertile soil due to water and wind erosion?
a) Pollution
b) Soil compaction
c) Soil degradation
d) Soil erosion
Answer: d) Soil erosion
29. Which of the following is a primary source of marine pollution?
a) Agricultural runoff
b) Volcanic activity
c) Natural oil seepage
d) Soil erosion
Answer: a) Agricultural runoff
30. What is the term for the process of converting waste materials into energy through controlled combustion?
a) Recycling
b) Incineration
c) Landfilling
d) Composting
Answer: b) Incineration
31. What is the term for the gradual increase in Earth’s average temperature due to human activities?
a) Global warming
b) Climate change
c) Ozone depletion
d) Acidification
Answer: b) Climate change
32. Which of the following is a renewable source of energy that utilizes the heat from the Earth’s interior?
a) Solar power
b) Wind power
c) Geothermal energy
d) Biomass energy
Answer: c) Geothermal energy
33. What is the term for the process by which plants use sunlight to convert carbon dioxide and water into oxygen and glucose?
a) Respiration
b) Photosynthesis
c) Transpiration
d) Decomposition
Answer: b) Photosynthesis
34. Which of the following is a major contributor to plastic pollution in the oceans?
a) Recycling facilities
b) Landfills
c) Shipping containers
d) Single-use plastics
Answer: d) Single-use plastics
35. What is the term for the practice of using living organisms to remove contaminants from soil, water, or air?
a) Erosion
b) Bioremediation
c) Pollination
d) Acidification
Answer: b) Bioremediation
36. What is the term for the process of converting waste materials into reusable materials to prevent them from going to waste?
a) Recycling
b) Incineration
c) Landfilling
d) Extraction
Answer: a) Recycling
37. Which of the following is a greenhouse gas released from the agricultural sector, particularly from livestock?
a) Carbon dioxide (CO2)
b) Methane (CH4)
c) Nitrous oxide (N2O)
d) Sulfur dioxide (SO2)
Answer: b) Methane (CH4)
38. What is the primary cause of the hole in the Earth’s ozone layer?
a) Deforestation
b) Vehicle emissions
c) Industrial pollution
d) Chlorofluorocarbons (CFCs)
Answer: d) Chlorofluorocarbons (CFCs)
39. Which of the following is a renewable source of energy derived from the heat stored within the Earth’s crust?
a) Wind power
b) Solar power
c) Geothermal energy
d) Hydroelectric power
Answer: c) Geothermal energy
40. What is the term for the loss of a species from a particular area, but not from the entire planet?
a) Extinction
b) Endangerment
c) Localized depletion
d) Overfishing
Answer: c) Localized depletion
41. Which of the following is the largest source of marine debris worldwide?
a) Plastic bottles
b) Fishing nets
c) Styrofoam
d) Cigarette butts
Answer: b) Fishing nets
42. What is the term for the gradual loss of productive land due to human activities, such as agriculture and deforestation?
a) Desertification
b) Pollution
c) Erosion
d) Urbanization
Answer: a) Desertification
43. What one of the following results from deforestation?
a) Loss of biodiversity
b) Soil erosion
c) Climate change
d) All of the above
Answer: d) All of the above
44. What is the term for the process of collecting and treating rainwater for various uses?
a) Water conservation
b) Desalination
c) Rainwater harvesting
d) Water purification
Answer: c) Rainwater harvesting
45. Which of the following is a major cause of air pollution in many urban areas?
a) Industrial emissions
b) Agricultural practices
c) Vehicle exhaust
d) Allergens
Answer: c) Vehicle exhaust
46. Which of the following is the primary source of marine plastic pollution?
a) Fishing nets
b) Plastic bottles
c) Straws
d) Microplastics
Answer: d) Microplastics
47. What is the term for the process of using waste materials to create new products?
a) Recycling
b) Upcycling
c) Repurposing
d) Landfilling
Answer: b) Upcycling
48. Which of the following is a major driver of deforestation in tropical rainforests?
a) Logging
b) Urbanization
c) Mining
d) All of the above
Answer: d) All of the above
49. What is the term for the deliberate release of harmful substances into the environment?
a) Pollution
b) Contamination
c) Emission
d) Spillage
Answer: a) Pollution
50. Which of the following is an example of a renewable energy source that harnesses the power of water?
a) Solar power
b) Wind power
c) Hydroelectric power
d) Geothermal energy
Answer: c) Hydroelectric power
51. Which of the following causes soil pollution the most?
a) Pesticides and herbicides
b) Deforestation
c) Acid rain
d) Industrial emissions
Answer: a) Pesticides and herbicides
52. What is the term for the process of converting waste materials into energy through the decomposition of organic matter?
a) Incineration
b) Landfilling
c) Composting
d) Anaerobic digestion
Answer: d) Anaerobic digestion
53. Which of the following is a renewable source of energy that utilizes the natural heat of the sun?
a) Geothermal energy
b) Solar power
c) Tidal energy
d) Nuclear energy
Answer: b) Solar power
54. What is the term for the loss of a species from its natural habitat due to human activities?
a) Endangerment
b) Extinction
c) Habitat destruction
d) Overexploitation
Answer: c) Habitat destruction
55. Which of the following is a significant contributor to ocean acidification?
a) Volcanic activity
b) Forest fires
c) Coral bleaching
d) Increased carbon dioxide emissions
Answer: d) Increased carbon dioxide emissions
56. Which of the following is a major factor contributing to the loss of biodiversity?
a) Habitat destruction
b) Climate change
c) Overexploitation
d) All of the above
Answer: d) All of the above
57. What is the term for the process of using less water to perform the same tasks, such as irrigation and household use?
a) Water conservation
b) Water purification
c) Water scarcity
d) Water pollution
Answer: a) Water conservation
58. Which of the following is a greenhouse gas primarily released from the burning of fossil fuels?
a) Carbon dioxide (CO2)
b) Methane (CH4)
c) Nitrous oxide (N2O)
d) Ozone (O3)
Answer: a) Carbon dioxide (CO2)
59. What is the term for the protection and management of natural resources to ensure their sustainability for future generations?
a) Conservation
b) Preservation
c) Stewardship
d) Restoration
Answer: c) Stewardship
60. Which of the following is a consequence of climate change?
a) Rising sea levels
b) Extreme weather events
c) Species extinction
d) All of the above
Answer: d) All of the above
61. Which of the following is a major cause of water pollution in many areas?
a) Industrial waste
b) Deforestation
c) Acid rain
d) Soil erosion
Answer: a) Industrial waste
62. What is the term for the process of restoring a degraded ecosystem to its original condition?
a) Reforestation
b) Conservation
c) Restoration
d) Rehabilitation
Answer: c) Restoration
63. Which of the following is a renewable source of energy that harnesses the power of the wind?
a) Solar power
b) Geothermal energy
c) Wind power
d) Biomass energy
Answer: c) Wind power
64. What is the term for the process of breaking down organic matter in the absence of oxygen?
a) Composting
b) Recycling
c) Fermentation
d) Anaerobic digestion
Answer: d) Anaerobic digestion
65. Which of the following is a major cause of deforestation in many regions?
a) Urbanization
b) Mining activities
c) gricultural expansion
d) Climate change
Answer: c) Agricultural expansion
66. What is the term for the loss of topsoil caused by wind or water erosion?
a) Desertification
b) Soil compaction
c) Soil degradation
d) Soil erosion
Answer: d) Soil erosion
67. Which of the following is a non-renewable source of energy formed from the remains of ancient plants and animals?
a) Natural gas
b) Solar power
c) Wind power
d) Biomass energy
Answer: a) Natural gas
68. What is the term for the process of reducing waste by using products repeatedly or using reusable alternatives?
a) Recycling
b) Upcycling
c) Waste reduction
d) Circular economy
Answer: d) Circular economy
69. Which of the following is a major cause of air pollution in many cities?
a) Deforestation
b) Agricultural practices
c) Vehicle emissions
d) Noise pollution
Answer: c) Vehicle emissions
70. What is the term for the practice of using natural methods to control pests and diseases in agriculture?
a) Organic farming
b) Genetic modification
c) Intensive farming
d) Industrial agriculture
Answer: a) Organic farming
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