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A splashy magic trick
Blue plus yellow equals green, right? Not always! In this experiment, you can pull off a colourful magic trick made possible by water density and temperature. You will need Two small glasses of the...
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Beam me up: Getting internet from space lasers
A TeraNet ground station at the University of Western Australia aims a laser at a satellite Credit: Danail Obreschkow, International Space Centre On 11 July, Australian scientists made a super-fast...
View ArticleBrainteaser: Batteries
Difficulty: Tricky A team of engineers have invented a new, stretchy battery that is clear. Another team have invented a jelly-like battery that is rainbow coloured. Both teams want to compare how...
View ArticleCybersecurity – A quick quiz
Being online is just part of living in the 21st century! Cybersecurity is all about making the most of the internet safely. So be a smart cookie and take a byte out of cybercrime with this quiz! (You...
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Mapping out disasters
Meet Aurora Foo: when a natural disaster strikes, she’s helping the helpers. Her job is assisting situation rooms and command centres around the country! Aurora uses maps to save lives. Credit: Aurora...
View ArticleRocks rock – A quick quiz
Geologists use the Mohs scale to measure hardness. We think this quiz is most definitely a Mohs 10! Are you up to scratch or will you barely leave a dent? QUIZ START The post Rocks rock – A quick quiz...
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Brainteaser: Animal equations
Difficulty: Tricky In this puzzle, each Aussie animal stands for a number. Each animal represents the same number throughout the puzzle. Can you use the first three mathematical equations to figure...
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Make giant cell cookies
Cells are the basic building blocks of life. In this activity, take a tasty tour of the cell components that make cells tick! You will need 2 ¾ cup (360 g) all-purpose flour 1 tsp baking soda 1 cup...
View ArticleThe shape of science – a quick quiz
This quiz looks at some of the shapes found in maths and science. Give it a go and see how you shape up! QUIZ START The post The shape of science – a quick quiz appeared first on Double Helix.
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How to tell if you’re stuck in a loop
This simple computer works by writing ones and zeros on a long strip of paper Image: Rocky Acosta It’s happened to all of us – the computer program you’re using starts thinking and won’t respond....
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Leaning fire
Water in a cup sloshes around if you don’t move it carefully. What about fire? Let’s find out! You will need Small glass jar Tealight candle Blu Tack or other adhesive putty Long matches or lighter...
View ArticleWrong seat brainteaser
Difficulty: Fun Eight people come together for a very important meeting. There are eight chairs around the table, and each one has a little sign with a name so everyone knows where they should sit....
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Dinosaur-ending asteroid came from beyond Jupiter
Artist’s impression of a meteorite impacting with a coastline. Credit: Don Davis/NASA, Public domain, via Wikimedia Commons What caused the dinosaurs to go extinct 66 million years ago? Most...
View ArticleBoldest oldest – A quick quiz
If good things come to those that wait…then these bold oldies are gold! Do you have the patience and wisdom to top this quiz or will you need to wait for the next one? QUIZ START The post Boldest...
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Brainteaser: Drilling the distance
Difficulty: Tricky A team of geologists are using the latest technology to drill into the Earth’s ocean floor and look at the rock underneath! They manage to drill a total of 1250 metres (based on a...
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Make some dodgy dice
Here’s a surprising pair of dice that you can make yourself! Take on this experiment to test whether different dice modifications change your chances. You will need • Adhesive putty • Marble or small...
View ArticleBirds on the brain – A quick quiz
In this bird-themed quiz, getting a 5/5 sure would be a feather in your cap! QUIZ START The post Birds on the brain – A quick quiz appeared first on Double Helix.
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Eels escape after being eaten!
The dark sleeper is a freshwater fish native to East Asia Credit: ©Getty Images/exs When a predator swallows their prey, usually that’s the end of the story. But scientists have discovered an eel that...
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Taking off with hydrogen
AMSL Aero founders Andrew Moore and Siobhan Lyndon with their electric aircraft Vertiia. Credit Peter Morris/sydneyheads.com Australian company, AMSL Aero, is launching a new hydrogen-powered aircraft...
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Brainteaser: NASA spacecraft logic
Difficulty: Tricky Can you solve this grid-based logic puzzle about NASA (inspired by a recent news article)? You are doing a science project about four of NASA’s spacecraft: Clipper, DAVINCI,...
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