Here’s a quiz to get your brain pumping. Test your knowledge of floating metals, and not one but two questions about the closest star to home – our Sun!
Results
Congratulations! You’re a real science whiz!
Oh dear! Better brush up before the next quiz!
#1. What is a pademelon?
Pademelons are like small wallabies and can be found in New Guinea, Tasmania and the east coast of mainland Australia.
#2. True or false? Aluminium is less dense than water, so it always floats on water.
False. Aluminium is denser than water, so it will typically sink unless it’s hollowed out. There are times aluminium will float on water, such as an empty aluminium can. In this case, it’s actually the air inside the can that’s making it float!
#3. At what temperature are Celsius and Fahrenheit the same?
At -40 degrees Celsius, it’s also -40 degrees Fahrenheit. Fahrenheit degrees are spaced closer together than Celsius, so water freezes at 32 degrees Fahrenheit or 0 degrees Celsius.
#4. What element is the Sun mostly made of?
The Sun is about 70% hydrogen, 28% helium and 2% other elements.
#5. In which month is Earth closest to the Sun?
Earth is closest to the Sun in January. It’s about five million kilometres closer than in July, which might seem like a long way, but it’s only a fraction of the average 150 million kilometres to the Sun.
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