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Posts by David

Under the surface of Mars News

by David, 29 July 2021 | 0 comments

Cross section illustration through a sphere.

If you dug a hole straight down, what would you find? Earth isn’t just solid rock all the way through. There’s a thin rocky crust floating on the slowly flowing mantle, a liquid outer core and solid metal inner core. It turns out that Mars has a similar internal structure to Earth.

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Out of orbit – a quick quiz Quiz

by David, 28 July 2021 | 0 comments

Blast into orbit with this well-rounded quiz. Will you crash back to Earth, or reach the stars?

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Jumping bug Activity

by David, 22 July 2021 | 0 comments

Twisted blue and white wire.

This simple toy is made from a few paperclips and can jump high into the air. Time to get bending!

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Growing big – a quick quiz Quiz

by David, 21 July 2021 | 2 comments

This quiz is all about growth! Can you grow your knowledge and get the high score?

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Finding bugs in dino doo-doo News

by David, 15 July 2021 | 0 comments

Illustration of a close up dinosaur face.

You might have seen pictures of insects trapped in amber. Millions of years ago, that amber was sticky, goopy, tree resin. But resin isn’t the only sticky stuff that can preserve ancient insects. Scientists have found insects preserved in a coprolite – fossilised poo!

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Back of the train brainteaser Brainteaser

by David, 14 July 2021 | 3 comments

Brain icon

Difficulty: Tricky Ben is driving his train slowly. He realises he’s left an important package in the last car of the train. He needs to hop out of the train, walk all the way to the back to retrieve it, and then walk to the front of the train again.

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Finding gold in fool’s gold News

by David, 8 July 2021 | 0 comments

Shiny yellow crystals

Back in the California gold rush, many people were tricked by a shiny yellow crystal known as fool’s gold. Now, more than 100 years later, scientists are flipping the script. Australian and Chinese researchers have found where real gold hides inside fool’s gold!

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Make egg-free meringues Activity

by David, 7 July 2021 | 0 comments

Meringue and banana slices drizzles with chocolate on a plate.

Light, fluffy and oh-so-sweet, meringues are a delicious treat. When beaten, egg whites turn into an amazing foam that can be baked to perfection. But there’s also a way to make meringues without using eggs! Safety: Use clean hands and clean equipment when handling food. This activity uses an oven and beaters. Ask an adult…

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Strange superpower! Substance stays same size News

by David, 24 June 2021 | 0 comments

Image of a metal engine.

Have you ever wondered why there are gaps in footpaths, and at the ends of bridges? Bridges, footpaths and many other structures get bigger when they heat up, and they need gaps so they don’t break on hot days. But Australian scientists have discovered a material that stays the same size over a wide range…

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Heat avoider Activity

by David, 23 June 2021 | 0 comments

Foil and paper strip curling as it is held over a candle flame.

Make a curious device that doesn’t like being put near a candle flame. When it gets hot, it curls away!

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