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. Which of the following is the longest distance?
It’s almost 700 000 kilometres from the centre of the Sun to its edge. The Moon orbits about 380 000 kilometres from Earth, and Saturn’s rings reach about 140 000 kilometres from its centre.
#2. All native Australian mammals have pouches.
False. Australia has several native species of placental mammals, including bats and native rats.
#3. How far under the ground is the bottom of the Kola Superdeep Borehole SG-3?
The Kola Superdeep Borehole SG-3 is the deepest artificial point on Earth, 12.262 kilometres below the ground.
#4. 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.
#5. At what temperature do water droplets in clouds spontaneously form ice crystals?
Water droplets in clouds spontaneously form ice crystals at –40 degrees Celsius.
#6. Does antimatter really exist?
Yes. Antimatter exists, and when matter and antimatter meet, they are both turned into energy.
#7. How many atoms are in a water molecule?
A water molecule is two hydrogen (H) atoms plus one oxygen (O) atom, making H2O.
#8. Who was the first woman in space?
Valentina Tereshkova was the first woman and 12th person to go to space, in June 1963.
#9. What is the name of Saturn’s largest moon?
Saturn’s largest moon, and the second largest moon in our solar system, is Titan.
#10. How many gigabytes are there in a petabyte?
There are 1000 gigabytes in a terabyte, and 1000 terabytes in a petabyte.
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