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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. When water starts to freeze, what symmetry do the crystals typically show?

Water crystals, including snowflakes, are often hexagonal.

#2. Which of the following weighs more?

A mixture of different sized particles is typically denser than ones that are the same size.

#3. What type of scientist was Douglas Mawson?

Douglas Mawson was a famous Australian geologist who explored Antarctica.

#4. When do comets reach their highest speed?

Comets gain speed as they fall towards the Sun and lose speed as they fly away.

#5. If you drop a hammer off a tall building, how fast will it be falling after one second?

Gravity accelerates objects at about 9.8 metres per second every second, and 9.8 metres per second is about 35 kilometres per hour.

#6. What is the more common name for a Telopea plant?

Telopea is the name of the genus that includes all five species of waratah.

#7. 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.

#8. 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.

#9. What animal has the scientific name Gallus gallus domesticus?

Gallus gallus domesticus is the scientific name for the domesticated chicken.

#10. The extinction that killed off the dinosaurs happened at the end of which geological period?

Dinosaurs emerged during the Triassic and went extinct at the end of the Cretaceous, although birds are descended from dinosaurs and are still with us today!

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