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Can You Answer These Basic Questions About Earth?

You know you learned this stuff at least once. Can you remember it now?

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  1. New Line Cinema
    True
    False
    Correct!
    Wrong!

    Earth is the densest!

    It has an average density of 5.51 grams per cubic centimeter.

  2. Tap to play GIF Tap to play GIF
    Tiger Productions / Via youtube.com
    True
    False
    Correct!
    Wrong!

    It's spreading apart!

    Thanks to the Mid Ocean Ridge right in the middle of the Atlantic Ocean basin, the ocean floor is spreading apart at a rate of about 2 to 5 cm per year.

  3. NASA
    True
    False
    Correct!
    Wrong!

    Other places have volcanoes too!

    There's a whole bunch on Jupiter's moon Io, for example.

  4. Tap to play GIF Tap to play GIF
    Purin Kumagai / Via youtube.com
    True
    False
    Correct!
    Wrong!

    Probably not!

    Scientists once thought that was possible, but now they can't really see a way for that to have happened. Now most scientists think it is the result of a massive collision with a Mars-sized object.

  5. prescott09 / Thinkstock
    True
    False
    Correct!
    Wrong!

    Truth!

    Nitrogen gas makes up well over 70% of the atmosphere

  6. Chuang Zhao
    True
    False
    Correct!
    Wrong!

    False!

    There was an even bigger one 250 million years ago!

  7. Tap to play GIF Tap to play GIF
    National Geographic / Via youtube.com
    True
    False
    Correct!
    Wrong!

    True!

    They happen on Earth but they are caused by the Sun!

  8. Tap to play GIF Tap to play GIF
    desertsmurf / Via youtube.com
    True
    False
    Correct!
    Wrong!

    Oxygen came later!

    The oxygen in our atmosphere came after photosynthesis first evolved around 2.4 billion years ago.

  9. egal / Thinkstock
    True
    False
    Correct!
    Wrong!

    Sometimes it's more circular than other times!

    The "eccentricity" of Earth's orbit, how circular or elliptical it is, varies on a roughly 100,000 year cycle.

  10. Tap to play GIF Tap to play GIF
    Universal Pictures
    True
    False
    Correct!
    Wrong!

    Totally true!

    The world was a pretty warm place 55 million years ago.

Can You Answer These Basic Questions About Earth?

Way to go!

You are a well-informed citizen of Earth. You know this planet inside and out, and it thanks you for it!

Way to go! Tap to play GIF Tap to play GIF
Warner Bros. Television Distributed
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Not too shabby!

You know some things about Earth. More exciting, though, is that you have so much more to learn!

Not too shabby! Tap to play GIF Tap to play GIF
Via giphy.com
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You are in your own world!

Technically you reside on Earth, but you live in a world of your own creation... And you know that world pretty darn well!

You are in your own world! Tap to play GIF Tap to play GIF
20th Century Fox
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Science Writer, Fossil Beastmaster

Contact Alex Kasprak at alex.kasprak@buzzfeed.com.

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