Here’s a quiz to sink your teeth into! How much do you know about crunchy science?


Congratulations! You are a real science whiz!

Oh dear! Better brush up before the next quiz!

#1. 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.

#2. Which of the following elements is represented as P on the periodic table?

The letter P represents phosphorus. Potassium is K, polonium is Po, and tungsten is W.

#3. Which of these food items can be made using extrusion technology?

Extruded foods are forced through a hole in order to shape them. CSIRO experts might have been involved in the invention of the iconic Australian extruded snack, Twisties!

#4. Which of these gems is a variety of the mineral corundum?

Rubies are a variety of corundum, but it’s traces of chromium that stain rubies their red colour.

#5. CRISPR is a method used for gene editing. What does the first letter stand for?

The letters in CRISPR stand for clustered regularly interspaced short palindromic repeats. CRISPR are special pieces of DNA that can be used to help edit an organism’s genome.

Was I right?


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Black lightning bolt in purple circle

3 responses

  1. cant do Avatar
    cant do

    your results of quiz are not working for participant to see where they went wrong. don’t like the design. 🙁

    1. David Avatar

      I’m sorry you’re having trouble with our quizzes.

      The answers to this quiz are:
      b) water pressure
      d) phosphorous
      d) all of the above
      b) rubies
      a) clustered

  2. Sotir Avatar

    IT works fine now but I got 3/5, good thing I didn’t see you’re answers above. (:

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