1. Recycling one glass bottle saves enough energy to power a light bulb for how many hours? 4
2. What percentage of the Earth is covered with water? 70%
3. What makes up nearly 80% of the Earth’s atmosphere? Nitrogen
4. What material takes the longest to decompose in a landfill? Glass
5. Guess the natural landmark! Ha Long Bay
6. How much of the world's water is available for human use? <1%
7. What year was the first Earth Day celebrated? 1970
8. Trees convert which gas into oxygen? Carbon dioxide
9. Guess the natural landmark!. Pamukkale
10. Which slogan was used in association with World Environment Day? Only One Earth
11. Guess the natural landmark!. Grand Canyon
12. What animal pollinates the most crops worldwide? Bees
13. How many times can a piece of paper be recycled? 6
14. What is Earth's natural satellite called? Moon
15. What gas has a major role in the greenhouse effect? Carbon dioxide
16. Guess the natural landmark!. Mount Fuji
17. Which country produces the most wind energy? China
18. Which is the largest island on Earth? Greenland
19. What is the longest river in the world? Nile
20. Guess the natural landmark!. White Sands National Park
21. What is the largest rainforest on Earth? Amazon Rainforest
22. Guess the natural landmark!. Lake Hillier
23. What is Earth's closest planet? Venus
24. How big is Earth’s radius? 6,371 km
25. How many major tectonic plates cover the Earth? 7
26. What is the term for animals that only come out at night? Nocturnal
27. Which of these is the largest active volcano on the planet? Mauna Loa
28. What day is Earth Day? April 22
29. Guess the natural landmark!. Niagara Falls
30. There are 12 times more trees on Earth than stars in the Milky Way. True
31. Which country has the most solar power capacity? China
32. Guess the natural landmark!. Cliffs of Moher
33. The Great Barrier Reef is found off the coast of which country? Australia
34. What percentage of Earth's species live in the ocean? 80%
35. Approximately how many species go extinct every day? 150
36. What is the most endangered ecosystem on Earth? Coral reefs
37. Which gas is responsible for the ozone layer? Ozone (O₃)
38. How many gallons of water does it take to produce one pound of beef? 1,800
39. What is the most common type of plastic found in the ocean? PET
40. What is the name of the largest ocean on Earth? Pacific
41. Guess the natural landmark!. Verdon Gorge
42. What is the hottest place on Earth? Death Valley
43. What percentage of the world's freshwater is frozen in glaciers? 69%
44. How much of Earth's land surface is covered by forests? 31%
45. How many layers does Earth have? 4
46. What is the deepest point in the ocean? Mariana Trench
47. How long does it take for a plastic bottle to decompose? 450 years
48. Which is the greenest form of transportation? Bike
49. Most of Earth’s breathable air comes from where? The ocean
50. What day is World Environment Day? June 5
51. Volcanoes can produce lightning. True
52. What natural phenomenon causes the Northern Lights? Solar wind particles hitting Earth's atmosphere
53. How many days does it take for the Earth to revolve around the Sun? 365
54. What item can be composted and turned into food for your garden? Eggshells
55. Which of these is NOT the main metal in the Earth's core? Gold
56. The first World Environment Day was held in which year? 1973
57. Guess the natural landmark!. Marble Caves
58. Which household appliance uses the most energy? HVAC/Heating & Cooling
59. How old is the Earth? 4.5 billion years
