Earth Day Trivia

+100 Earth Day Trivia Questions and Answers

Mike Oberman

Updated: July 16th, 2024

Test your knowledge and love for Mother Earth with this Earth Day quiz. Go through 100+ trivia questions and answers and see how many you get right. Go through topics like Earth day activities, planet and ecology facts, environmental issues, Earth Day movement facts, and more. What better way to appreciate our amazing planet?

Earth Day

Question: The United Nations has what name for Earth Day?

Answer: International Mother Earth Day

Question: Earth Day's date was chosen because it falls between which two events on college campuses?

Answer: Spring break and finals

Question: What is the date of Earth Day?

Answer: April 22

Question: When was the first Earth Day celebrated?

Answer: 1970

Question: Who is considered the founder of Earth Day?

Answer: Senator Gaylord Nelson

Question: Which country celebrated the first Earth Day outside the U S?

Answer: Canada

Question: What major environmental event happened in 1970, the same year as the first Earth Day?

Answer: The creation of the U.S. Environmental Protection Agency (EPA)

Question: What is the theme for Earth Day 2021?

Answer: Restore Our Earth

Question: Which organization coordinates Earth Day events globally?

Answer: Earth Day Network

Question: What was the theme of Earth Day 2020?

Answer: Climate Action

Question: Which landmark environmental law was signed in the U.S. in 1970?

Answer: The Clean Air Act

Question: What color is commonly associated with Earth Day?

Answer: Green

Question: What is the symbol for recycling?

Answer: Three arrows forming a triangle

Question: What is the primary goal of Earth Day?

Answer: Environmental protection and awareness

Question: How many people participated in the first Earth Day?

Answer: 20 million

Question: What was the theme for Earth Day 2019?

Answer: Protect Our Species

Question: Which decade saw the establishment of Earth Day?

Answer: 1970s

Question: Which U.S. President proclaimed April 22 as Earth Day?

Answer: Richard Nixon

Question: What global event is Earth Day often associated with?

Answer: Environmental movements

Question: What activity is often promoted on Earth Day?

Answer: Planting trees

Question: Which Earth Day theme focused on climate change awareness?

Answer: Earth Day 2007

Question: Which international agreement on climate change was signed on Earth Day?

Answer: Paris Agreement (2016)

Environmental Science

Question: What is the largest source of carbon dioxide emissions?

Answer: Burning fossil fuels

Question: What percentage of the Earth's surface is covered by oceans?

Answer: 71%

Question: What is the term for the warming of the Earth's atmosphere?

Answer: Global warming

Question: Which layer of the atmosphere contains the ozone layer?

Answer: Stratosphere

Question: What is the process of converting waste materials into new materials and objects?

Answer: Recycling

Question: What greenhouse gas produced by cows during digestion?

Answer: Methane

Question: What is the main cause of deforestation?

Answer: Agricultural expansion

Question: What is the most abundant greenhouse gas in the Earth's atmosphere?

Answer: Water vapor

Question: What is the scientific study of weather patterns called?

Answer: Meteorology

Question: What is the term for the variety of life on Earth?

Answer: Biodiversity

Question: What is the largest type of ecosystem on Earth?

Answer: Marine ecosystem

Question: What percentage of the Earth's water is freshwater?

Answer: 3%

Question: What is the process by which plants use sunlight to produce energy?

Answer: Photosynthesis

Question: What is the main gas responsible for acid rain?

Answer: Sulfur dioxide

Question: What is the phenomenon of increasing temperature in cities called?

Answer: Urban heat island effect

Question: What is the name of the largest rainforest in the world?

Answer: Amazon Rainforest

Question: What gas do plants absorb during photosynthesis?

Answer: Carbon dioxide

Question: What is the most common type of waste found in oceans?

Answer: Plastic

Question: What is the main source of marine pollution?

Answer: Runoff from land

Question: What is the term for the gradual loss of soil quality?

Answer: Soil degradation

Renewable Energy

Question: What is the primary source of renewable energy?

Answer: Solar power

Question: What type of energy is generated by wind turbines?

Answer: Wind energy

Question: Which renewable energy source relies on the heat from the Earth?

Answer: Geothermal energy

Question: What is the main advantage of renewable energy?

Answer: It is sustainable and reduces greenhouse gas emissions

Question: What is the process of using water to generate electricity called?

Answer: Hydropower

Question: Which country is the largest producer of solar energy?

Answer: China

Question: What is the term for converting sunlight directly into electricity?

Answer: Photovoltaic effect

Question: What is the main component of solar panels?

Answer: Silicon

Question: What is the process of harnessing energy from the ocean's tides called?

Answer: Tidal energy

Question: Which renewable energy source uses organic material to produce energy?

Answer: Biomass energy

Question: What is the term for energy stored in batteries?

Answer: Electrical energy

Question: What type of renewable energy can be generated by dams?

Answer: Hydroelectric power

Question: What is the name of the device that converts mechanical energy into electrical energy?

Answer: Generator

Question: Which U.S. state has the highest installed wind energy capacity?

Answer: Texas

Question: What is the main environmental benefit of using renewable energy?

Answer: Reduction of carbon footprint

Question: Which European country is known for its extensive use of wind energy?

Answer: Denmark

Question: What type of energy is produced from organic matter decomposition?

Answer: Biogas

Question: What is the main challenge of using solar energy?

Answer: Intermittency due to weather conditions

Question: Which renewable energy source is harnessed using turbines in rivers?

Answer: Hydrokinetic energy

Question: What is the primary fuel used in biomass energy production?

Answer: Plant and animal waste

Wildlife Conservation

Question: What is the term for the protection and preservation of natural environments?

Answer: Conservation

Question: What is the most endangered animal species in the world?

Answer: Javan rhino

Question: What international agreement aims to protect endangered species?

Answer: CITES (Convention on International Trade in Endangered Species)

Question: What is the term for animals that are at risk of extinction?

Answer: Endangered species

Question: What is the largest land mammal?

Answer: African elephant

Question: What is the primary reason for the decline in bee populations?

Answer: Pesticide use

Question: What is the name of the organization that assesses the conservation status of species?

Answer: IUCN (International Union for Conservation of Nature)

Question: What is the term for the illegal hunting of animals?

Answer: Poaching

Question: What is the primary habitat of polar bears?

Answer: Arctic region

Question: What is the term for species that have been brought to an area where they are not native?

Answer: Invasive species

Question: What animal is known as the "king of the jungle"?

Answer: Lion

Question: What is the main goal of wildlife sanctuaries?

Answer: To protect and rehabilitate endangered species

Question: What is the most trafficked mammal in the world?

Answer: Pangolin

Question: What is the primary diet of giant pandas?

Answer: Bamboo

Question: What is the largest marine mammal?

Answer: Blue whale

Question: What is the term for the variety of ecosystems in a region?

Answer: Ecological diversity

Question: What is the main threat to coral reefs?

Answer: Climate change

Question: What is the primary purpose of national parks?

Answer: To preserve natural landscapes and wildlife

Question: What is the smallest bird in the world?

Answer: Bee hummingbird

Question: What is the term for a species that no longer exists?

Answer: Extinct

Question: What is the primary food source for the Arctic fox?

Answer: Lemmings

Question: What is the term for the study of animals?

Answer: Zoology

Question: What animal is known for its long neck and spotted pattern?

Answer: Giraffe

Question: What is the primary reason for the decline of amphibian populations?

Answer: Habitat loss

Question: What is the term for the movement of animals from one region to another?

Answer: Migration

Question: What is the most common cause of forest fires?

Answer: Human activity

Question: What is the primary habitat of the Bengal tiger?

Answer: Tropical forests

Question: What is the term for the natural home of an animal?

Answer: Habitat

Question: What is the primary threat to the survival of sea turtles?

Answer: Plastic pollution

Question: What is the main goal of the Endangered Species Act?

Answer: To protect and recover imperiled species and their ecosystems

Question: What is the largest bird of prey?

Answer: Andean condor

Question: What is the primary reason for deforestation?

Answer: Agricultural expansion

Question: What is the term for the variety of plant and animal life in a particular habitat?

Answer: Biodiversity

Question: What is the primary food source for koalas?

Answer: Eucalyptus leaves

Question: What is the main threat to the survival of orangutans?

Answer: Habitat destruction

Question: What is the term for an area where plants and animals live and interact?

Answer: Ecosystem

Question: What is the primary diet of the African lion?

Answer: Meat

Question: What is the term for species that play a crucial role in their ecosystem?

Answer: Keystone species

Question: What is the main cause of extinction for many species?

Answer: Human activities

Question: What is the term for protecting species from extinction?

Answer: Conservation efforts