Challenge the Brain

Earth Day Quiz Questions


Celebrate World Earth Day with our selection of Earth Day quiz questions readymade for adults and kids to enjoy. For the best family or school quiz night, check out our free Earth Day quizzes with trivia questions for April 22nd by Challenge The Brain.

Geography quiz image by Challenge the Brain

World Earth Day questions for the best quiz night!

Earth Day Quiz Questions


  1. Which country was the first to celebrate Earth Day?

  2. What type of biome is often referred to as 'the lungs of the Earth' and provides our planet with around 20% of its oxygen?

  3. Does Earth Day have a fixed date?

  4. What gas is produced when carbon and oxygen bond together?

  5. True or false: The Earth's oceans provide major carbon storage systems?

  6. Which American Senator founded Earth Day?

  7. What type of zone describes an area of the ocean in which no life exists due to low oxygen levels?

  8. Why is planet Earth commonly known as the Blue Planet?

  9. What year was Earth Day first celebrated?

  10. The total amount of greenhouse gases released into the atmosphere as a result of human activity is known as: a) Carbon Handprint, b) Carbon Fingerprint, c) Carbon Footprint?

  1. What are the four main layers of the Earth?

  2. In 2016, nations from across the world gathered in which city to sign an agreement to work towards reducing global carbon pollution?

  3. Which American environmental activist hosted the first Earth Day event held in Philadelphia and later became known as the Unicorn Killer?

  4. Which Indonesian river is often said to be the most polluted river in the world?

  5. Which American peace activist designed the Earth Day Flag in 1969?

  6. True or false: As of 2013, Delhi was one of the most polluted cities in the entire world by particulate matter concentration?

  7. Is the majority of marine pollution caused by land or non-land based activities?

  8. Which agreement was signed on Earth Day 2016 by Barack Obama and Xi Jinping?

  9. What percentage of the Earth's surface consists of water, approximately: a) 60%, b) 70%, c) 80%?

  10. Can you unscramble the following letters to reveal a word that describes the mass clearing of the world's forests: TTNDOEIAREOFS