Here's Question 1! How many traditional senses are recognized by humans?
How many major blood types are there in the human ABO system?
Outstanding!
That was incorrect.
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How many chromosomes are there in a typical human cell?
Nice!
Uh-oh. That was incorrect. 😔
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The number of bones in an adult human skeleton is typically:
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The average lifespan of a human red blood cell is about:
Absolutely right! 👍
Not quite right. 😢
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How many chambers are there in a human heart?
You get a gold star for that! 🌟
I'm afraid that wasn't it. 😔
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How many elements are on the periodic table?
Excellent!
Nope, sorry. 😢
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A water molecule (H₂O) contains how many oxygen atoms?
You're one class act!
Nope, sorry. 😢
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At what temperature do Celsius and Fahrenheit scales read the same value?
That's right!
Uh-oh. That was incorrect. 😔
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At what temperature does water boil at sea level (in Celsius)?
Hooray! 🥳
Hmm, I don't think so. 😔
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The density of water at room temperature is:
The speed of light in a vacuum is approximately:
Celebrate your progress! You're halfway through the quiz! The pH of pure water is approximately:
The average speed of sound in dry air at room temperature is:
Perfect! 👊
Hmm, I don't think so. 😔
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A typical magnet has how many poles?
Superb!
Uh-oh. That was incorrect. 😔
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The electromagnetic spectrum encompasses a wide range of radiation types. How many main regions are traditionally recognized within this spectrum?
Fantastic! 🥳
I'm afraid that wasn't it. 😔
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The structure of the earth is divided into how many major components?
Brilliant! 👍
I'm afraid that wasn't it. 😔
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The gravitational acceleration on Earth is approximately:
Perfect! 👊
Not quite right. 😢
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How long does it take for Earth to make one rotation on its axis?
The Earth is both spinning on its axis and orbiting the Sun at the same time. How long does it take for Earth to orbit the Sun?
Earth is estimated to be approximately how many years old?
Keep up the momentum! Scientists estimate the universe to be approximately how many years old?
You're almost done! Excluding dwarf planets, how many planets are currently recognized in our solar system?
And last but not least, approximately how many years ago did the dinosaurs become extinct?
Woohoo! 🥳
Having difficulty with this one?
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