Earth Day Riddles Quiz

What is the largest ocean on Earth?

• Arctic Ocean

• Indian Ocean

• Atlantic Ocean

• Pacific Ocean

Which place has a higher average temperature: the Earth's core or the surface of the Sun?

• Both have equivalent temperatures

• Cannot be determined

• Earth's core

• Surface of the Sun

The Great Barrier Reef is the largest coral reef system in the world, located off the coast of which country?

• Indonesia

• Philippines

• Brazil

• Australia

What is the name of the highest mountain on Earth?

• K2

• Mount Kilimanjaro

• Matterhorn

• Mount Everest

Which layer of Earth's atmosphere absorbs ultraviolet rays from the Sun?

• Ozone Layer

• Thermosphere

• Stratosphere

• Mesosphere

Which U.S. president signed the Paris Agreement on climate change?

• Donald Trump

• George W. Bush

• Bill Clinton

• Barack Obama

Which book published in 1968 warned about the danger of overpopulation on the planet?

• Collapse

• An Inconvenient Truth

• Silent Spring

• The Population Bomb

Which organization was the main sponsor for the first Earth Day?

• World Wildlife Fund

• Sierra Club

• United Automobile Workers

• Greenpeace

In 2011, 28 million trees were planted in which country as part of the 'Plant Trees, Not Bombs' campaign for Earth Day?

• Brazil

• India

• China

• Afghanistan

When does the Earth Equinox (the day when day and night are equal) occur during the year?

• September 23

• June 21

• March 20

• December 21