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Earth Day quiz: What's One Green Thing you can do for the planet?

Test your knowledge by taking one (or all!) of these quizzes.

There are plenty of ways to “go green" on Earth Day.

Celebrated on April 22 each year, Earth Day celebrates the start of the environmental movement in 1970, along with all of the ongoing efforts to make our planet a greener, healthier one.

But how much do you really know about Earth Day, the environment and climate change? Do you know what you can do to help the planet? Whether you're looking to test your knowledge or find engaging Earth Day activities for kids, these Earth Day quizzes will teach you a thing or two about the annual holiday, our planet and everything that makes it go 'round (all while inspiring you to show Mother Nature some major TLC).

TODAY Earth Day Quiz: What can you do?

TODAY believes that all big changes start with one small thing. Maybe it’s time to start composting. You could upcycle things that would otherwise be trash. Or simply make your own coffee and ditch the disposable cups.

Take this quiz to find the #OneGreenThing you’ll pledge to do for the planet.

Climate change quiz

How much do you know about the changing climate? This quiz from puts your knowledge to the test.

Earth Day quiz for kids

National Geographic Kids put together this quiz for students to find out just how green they are — and then find ways to help.

Conservation International Earth Day quiz

Conservation International put together this Earth Day quiz to test your knowledge of how well you know these facts about the Earth.

NASA Earth Day Quiz

How is Earth different from other planets, and what makes it a goldilocks planet? NASA has this Earth Day quiz to test your planetary knowledge.