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Science posts

Drop jump Activity

by David, 17 October 2019 | 2 comments

Two matcch box drawers side by side with a ten cent coin in the upper drawer.

Drop the ruler, watch for the jump… that’s the point of drop jump! Can you work out which matchbox tray the coin will fall into?

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Pterosaur tears up ancient sky News

by David, 10 October 2019 | 0 comments

A pterosaur - a flying reptile from the age of the dinosaurs

It’s spring, and in many areas of Australia that means it’s magpie swooping season. But next time you’re ducking an angry bird, be thankful you live now and not 90 million years ago. Back then, the swooping might have come from something much larger.

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Raise the volume! – a quick quiz Quiz

by David, 9 October 2019 | 0 comments

Black lightning bolt in purple circle

This quiz we’re looking at volumes. Time to fill up on some science knowledge!

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Magnifying sound Activity

by David, 3 October 2019 | 0 comments

A man holdiing a pink baloon near his face and a phone at arms length.

A magnifying glass can bend light waves to make an object look bigger. Can you make a magnifying glass for sound waves too?

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Bugs are back, but where have they been? News

by David, 26 September 2019 | 0 comments

Brown moth with segmented, furry body.

By Andrea Wild and Bryan Lessard Insect populations boom during warmer and wetter months. But have you ever wondered where they go during winter?

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The Beauty Beneath – Underwater Sydney Book

by David, 12 September 2019 | 2 comments

seaweed and fish under the sea

Dip below the surface to discover the extraordinary plants and animals that call Sydney Harbour home.

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Levitating card Activity

by David, 5 September 2019 | 0 comments

Man blowing through a cotton reel.

Normally, when you blow on a piece of card, it flies away. But in this activity, you can blow to pull the card towards you with the science of air pressure!

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Air cannon Activity

by David, 22 August 2019 | 0 comments

Cup with plastic wrap and ticket targets in the background.

Want to reach out and touch something with a puff of air? This tiny air cannon shoots vortexes of air that can be felt from metres away!

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Poems from the periodic table News

by Jasmine, 15 August 2019 | 2 comments

Is there a chemical element you love the most? To celebrate the International Year of the Periodic Table in 2019, Double Helix is running a poetry competition for school-aged students with support from the Royal Australian Chemical Institute (RACI). Meet our chemistry expert and competition judge, Michelle Neil!

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Sugar and sunglasses Activity

by David, 8 August 2019 | 0 comments

Jar with polarised light effect.

Wearing sunglasses while using a computer might seem like a bad idea. But if you use the right glasses, it can make a great experiment!

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