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  • How many times does the average human heart beat per day?
    Only when something scary happens
    Around 1 million times
    Around 10000 times
    Around 100000 times
  • How many bones are babies born with compared to adults?
    Just the one big wobbly one
    The same — 206
    Fewer — around 150
    More bones — around 270
  • Which planet rains diamonds?
    Neptune
    Mars
    The one we can't afford to visit
    Venus
  • How many cells does the human body replace every day?
    Billions
    All of them, you are basically new
    Millions
    Hundreds
  • What covers about 71% of the Earth's surface?
    Land
    Water
    Ice
    Concrete in big cities
  • How many hearts does an octopus have?
    2
    3
    Enough to break yours
    1
  • What is the most common element in the universe?
    Carbon
    Hydrogen
    Oxygen
    Disappointment
  • What percentage of the ocean remains unexplored by humans?
    About 30%
    Around 50%
    The bit with the scary fish
    Over 80%
  • What is the strongest muscle in the human body relative to its size?
    The heart
    The one you pull at the gym
    The bicep
    The tongue
  • What is the fastest thing in the universe?
    Light
    Your teacher walking to the staffroom
    Sound
    A cheetah
  • Which country has the most natural lakes in the world?
    The one that's always wet
    Russia
    Canada
    Brazil
  • How much stronger is a human's sense of smell for memories compared to other senses?
    Smell triggers the strongest memories of all senses
    Sight triggers the strongest memories
    Whatever you smelled in school lunch stays forever
    Sound triggers the strongest memories
  • What is the longest anyone has gone without sleep on record?
    The entire exam season
    3 days
    5 days
    11 days
  • How long does it take for light from the sun to reach Earth?
    24 hours
    Long enough to get a tan
    8 minutes
    1 hour
  • What percentage of your DNA do you share with a banana?
    About 90%
    About 60%
    About 10%
    Enough to feel personally offended
  • What is the shortest war in history?
    Long enough to regret it
    38 to 45 minutes
    2 days
    1 week
  • How fast does a sneeze travel when it leaves your body?
    Around 50 km/h
    Fast enough to annoy everyone nearby
    Around 300 km/h
    Around 160 km/h
  • How much of your life will the average person spend asleep?
    About half
    Not enough apparently
    About a quarter
    About a third
  • How old is the universe estimated to be?
    Older than my grandad
    Around 13.8 billion years
    Around 1 trillion years
    Around 4 billion years
  • How many languages are spoken in the world today?
    Around 7000
    Too many for one Google Translate tab
    Around 2000
    Around 500
  • How many steps does the average person walk in a lifetime?
    Not enough according to my parents
    Around 100 million
    Around 1 billion
    Around 10 million
  • How long is a day on Venus compared to a year on Venus?
    Venus doesn't believe in time
    A day is longer than a year
    They are exactly the same
    A year is longer than a day
  • How long can a human survive without water?
    Around 10 days
    Around 3 days
    Depends on the Wi-Fi situation
    Around 3 weeks
  • Which organ in the human body can regenerate itself?
    The liver
    The one you never use
    The brain
    The heart
  • What is the most spoken language in the world by total speakers?
    Mandarin Chinese
    Spanish
    Emoji
    English
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