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!


Congratulations! you are a real science whiz!

Oh dear! better brush up before the next quiz!

#1. Sound travels faster in water than air.

True. Sound travels faster in water than in air.

#2. Which of these Australian animals is not considered endangered?

The eastern grey kangaroo is the only animal listed that is not considered endangered.

#3. What is the pollinator of the rare Canberra spider orchid?

The Canberra spider orchid is pollinated by a wasp. The species of wasp is still undescribed and doesn’t yet have a name.

#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. How many gigabytes are there in a petabyte?

There are 1000 gigabytes in a terabyte, and 1000 terabytes in a petabyte.

#6. How wide is the Milky Way galaxy?

The Milky Way is approximately 100 000 light years across. That means it takes about 100 000 years for light to travel from one side of the galaxy to the other.

#7. What is made at the Australian Synchrotron?

The Australian Synchrotron makes short bursts of very bright light, which are used to look inside everything from rocks to human tissue.

#8. What is a peachick?

A peachick is a young peacock or peahen.

#9. What’s the most abundant gas in Earth’s atmosphere?

About 78% of Earth’s atmosphere, by volume, is nitrogen gas.

#10. How many legs does a silverfish have?

Silverfish are insects, so they have six legs.

Was I right?

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