Start the new decade with a challenge! This megaquiz will test your knowledge of all the quizzes we wrote in 2018. The questions are randomly selected, so if you want more questions, you can just reload the page. Or head back to our 2019 megaquiz!
Results
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#1. The tallest tree in the world is an endangered redwood named Hyperion. How tall is this tree to the nearest metre?
Hyperion, the tallest tree in the world stands at 115.9 metres.
#2. Which animal was historically called a ‘camelopard’?
With a camel-like shape and leopard-like colouring, the giraffe was once known as a camelopard.
#3. If you increase the volume of a sound by 10 decibels, how much more power does it have?
A difference of 10 decibels means ten times more power.
#4. Aedes aegypti is one of the deadliest animals on Earth, but what is it?
Aedes aegypti is a mosquito species that can spread dengue fever, chikungunya, Zika virus, Mayaro and yellow fever.
#5. What type of electric charge does an electron have?
Electrons have a negative electric charge, which means they flow out of the negative end of a battery and come in the positive end!
#6. Which of the following is nature’s toughest fibre?
Limpet teeth overtook spider silk as the toughest naturally occurring fibre in 2015. Limpets are a type of marine snail. They spend most of their life looking for food by dragging their teeth along rocks in shallow ocean waters. With so much grinding, these teeth need to be super tough!
#7. Does antimatter really exist?
Yes. Antimatter exists, and when matter and antimatter meet, they are both turned into energy.
#8. Who was the first mathematician to describe how to do arithmetic with the number zero?
Brahmagupta was an Indian mathematician who wrote Brāhmasphuṭasiddhānta, a book containing the rules for doing arithmetic with positive numbers, zero and negative numbers.
#9. How many atoms are in a water molecule?
A water molecule is two hydrogen (H) atoms plus one oxygen (O) atom, making H2O.
#10. What kind of rock is coal?
Coal is formed from plant debris collecting and slowly turning into rock over millions of years.
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