How close is close enough? Try this batch of questions and see how close you can get to full marks!


Congratulations! You are a real science whiz!

Oh dear! Better brush up before the next quiz!

#1. What is the name for two stars that orbit so close that they touch each other?

Scientists have detected many contact binary systems because the stars block each other in the sky regularly, making them appear to darken and brighten repeatedly.

#2. What is CSIRO researching to control the invasive wandering trad weed?

CSIRO has been testing a leaf smut fungus to ensure it will only affect the target weed, and not native plants.

#3. Which of these is not a rock?

Bakelite was the first synthetic plastic ever made, and was patented in 1909.

#4. True or false? Bluebottles aren’t true jellyfish: each individual is a colony of cooperating animals.

True. A bluebottle is made up of lots of individual of the same species, but they take different forms and have different jobs. Some have tentacles, some can eat, some help with swimming, and so on.

#5. In which month is Earth closest to the Sun?

The Earth’s orbit is not quite circular, and it gets closest to the Sun in early January at about 147 million kilometres away. Throughout the year it averages about 150 million kilometres from the Sun.

Was I right?


If you’re after more fun science for kids, subscribe to Double Helix magazine!


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