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The toughest challenge – a quick quiz

By David, 5 December 2018 Quiz

This time you’re up against our hardest quiz yet! If you get even one question right, we think you have fantastic science knowledge. If you answer all five questions correctly? You’re a quiz whiz. Let us know in the comments below!

#1 What fuel does the OPAL nuclear reactor use?

The OPAL reactor uses uranium as fuel.

#2 How fast is the International Space Station moving as it orbits Earth?

The International Space Station orbits Earth once every 93 minutes. That means it’s travelling at more than 27 600 kilometres per hour!

#3 What colour is titanium dioxide?

Titanium dioxide is a bright white pigment. It’s commonly used as an ingredient in sunscreen.

#4 When was Velcro patented?

Velcro was patented in 1955. George de Mestral invented Velcro after going for a walk and noticing seeds caught on his clothes and in his dog’s fur.

#5 Which genus of Australian plants are commonly known as bottlebrushes, and typically have bright red flowers?

Callistemon typically have bright red, cylindrical flowers that look like brushes for cleaning bottles.

Was I right?


Congratulations! You are a real science whiz!

Oh dear! Better brush up before the next quiz!

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