Here’s our megaquiz for the year! Below are 10 questions picked from every quiz we wrote in 2020. If you want more questions, just hit refresh and we’ll grab you another 10. Good luck!
Results
Well done! You have some real science smarts!
Oh no! Why not try again by refreshing the page – you’ll get different questions!
#1. Which element is often added to table salt to help prevent thyroid diseases?
Iodine is often added to salt to prevent iodine deficiency. You might see the words ‘iodised salt’ on the packet.
#2. How many different types of bitter taste receptors are there in humans?
There are 25 different human bitter receptors recorded in the bitterDB database. But not all humans have all 25 receptors!
#3. Which of the following is a chemical symbol on the periodic table?
Fe is the chemical symbol for iron.
#4. Flutes are one of the oldest known instruments in the world. Scientists have used carbon dating to trace their history. How far back does it go?
Scientists have dated fragments of ancient flutes to 42 000 years ago!
#5. Why is celery so crunchy?
Water pressure against the cellulose in cell walls is responsible for much of celery’s crunch. Cellulose is also what makes wood hard.
#6. Spelunking is another name for what deep activity?
Spelunking is another word for caving, or exploring underground caves.
#7. What dies during apoptosis?
Apoptosis is the body’s way of removing unwanted cells.
#8. Flower farmers near Rotorua use geothermal energy to heat their greenhouses, but where does geothermal energy come from?
Geothermal energy comes from hot rocks underground, and can often be found near volcanoes.
#9. Which of the following is a strong acid?
Strong acids are ones that release all their hydrogen ions when dissolved, and hydrochloric acid is one of the few acids that do!
#10. Which of the following life forms emerged first?
Sharks emerged around 410 million years ago. Flowering plants emerged approximately 140 million years ago and dinosaurs 240 million years ago.
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3 responses
Hey, I got 9 right, missed moons of Pluto, but you gave me an 8/10. Looks like you program did not account for the extra 5 question, just the first five since I aced the last 5.
Hi Terry,
Thanks for the feedback! Sadly, the quiz changes every time you load it, so I can’t get the same bug to appear. But let us know if it happens again, and I’ll dig a bit deeper.
If you want another quiz, just press f5 on the quiz page to refresh the page.
Hi David,
I thought there might be a larger problem, though very minro,` and you would get a number of responses so I wanted to be first. :-} All is good.
Thank you
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