Search results

Listed under:  Technologies  >  Materials
Video

Elliot and the Surfing Scientist: Red cabbage pH experiment

It might sound 'un-sciencey', and have a bad smell, but red cabbage is actually very useful for testing the pH of liquids. Added to well-known liquids like lemonade or vinegar, red cabbage juice changes to 'pretty colours'. In this clip, Surfing Scientist Ruben Meerman explains the colour changes and how red cabbage juice ...

Video

For the Juniors: Super-fast jet boats

Jet boats can go really fast. Instead of an outboard motor and propeller, jet boats have an inboard engine and they eject a jet of water out the rear of the boat. Watch this clip to see how they work.

Video

For the Juniors: Picking and processing fresh apples

Discover the story of apples, from picking and pressing to processing in a factory. Learn how juice, cider and vinegar are made from apples. See how many other things are made from apples.

Video

For the Juniors: Milk from the dairy to the shop

Have you ever wondered about the steps involved in getting milk from a cow to you? This clip tells the story of milk, from the dairy farm to the supermarket. Discover where cream comes from and how milk is made safe to drink.

Video

How to build a Mars rover

Imagine if you were building a robot to help you explore Mars. That's exactly what these engineering students are doing. Watch this video to find out about their design process. How important do you think it is to test and review the final product after it has been built?

Video

Elliot and the Surfing Scientist: From chocolate buttons to magic patterns

Want to do a simple science experiment that works just like a magic trick? Watch the Surfing Scientist to find out how. He creates a pattern made up of regular shapes by dissolving coated chocolate buttons.

Video

Indigenous bags and textiles

Have you ever wondered why your bags are made from certain materials? There are many factors involved, including usage and availability of material. In this video, learn what the Kun-maj (small fishing bag) is made of and how it is made. Why is it strung together rather than woven? How is it different from Yvonne Koolmatrie’s ...

Video

Create: What is abstract art?

Traditionally artworks were representations of real life objects and environments. When you looked at these works you could usually identify what the artist was representing. How is abstract art different from this? Watch this video to see an example of an abstract painting, then have a go at creating one yourself!

Video

For the Juniors: First the base, then the frame

Come and see Hugo's house getting built. Find out how the concrete foundations are laid. What comes next? Carpenters build a wooden frame. Spot the tools used to build the house. How is each tool used?

Video

For the Juniors: Ramping up the fun

Join Winston as he tests which materials slide down a ramp. Which ones will slip and which ones will grip? He's testing a wooden block, a stone, a glass bottle and an eraser. Predict what will happen. Watch to see if your prediction was right.

Video

What makes these paper planes fly?

Have you ever wondered what makes a paper plane fly? Think about the design of the paper plane as well as external factors like the various forces that are at play, then make a list of the design considerations and a list of the different forces.

Video

How to design and build a robot in six weeks!

Evan, a mechanical mentor for FIRST Robotic Competition's 3132 'Thunder Down Under', outlines the processes involved in designing, building and testing a robot in six weeks. What influences the team in their design and building processes? Can you think of anything else that might influence the design and build of the robot ...

Video

Different types of telescopes

You can find both refracting and reflecting telescopes at Sydney Observatory. How are they different in the way they work and look? What can you find in nature that is like a telescope? Which type of telescope is it like?

Video

Engineering clean rivers

Figuring out how to clean up contaminated rivers is a big challenge. It's also tricky to work out where the most contaminated parts of a river system are and whether its fish are safe to eat. Watch this video and learn how engineering has helped to solve these problems. Why do you think engineers looked to the bottom of ...

Video

For the Juniors: Balance is a matter of ballast

Have you seen large ships that carry shipping containers as cargo? In this clip we show you how these ships use ballast to help them balance their load. Find out what ballast is and how it stops a ship from sinking. Also see the massive engines on these big cargo ships.

Video

For the Juniors: Boats made from different materials

See how boats can be made from wood, fibreglass and aluminium. Watch film of some Aboriginal men making a bark canoe. See how a special mould is used to make boats made from fibreglass. Find out why aluminium is a useful metal for making boats.

Video

For the Juniors: How does rice get to the supermarket?

Do you like brown rice or white rice? Do you know why they look different? This clip shows how rice grains from the farm are cleaned, milled and packed into bags. Discover how many different foods can be made from rice.

Video

Can We Help?: Artificial eyes: how are they made?

To answer the question 'Are glass eyes really made of glass?' Peter Rowsthorn visits an ocularist who makes artificial eyes. Join him as he investigates how these eyes are made. Witness the skill of an ocularist, Jenny Geelen, as she creates an artificial eye to match Pete's existing eyes.

Video

Tough zirconium - but what's its secret side?

The element zirconium is often used for its tough, abrasive properties. It also has a secret side. View this clip (developed by students for the 2013 Sleek Geeks Eureka Science Schools Prize competition), which highlights the properties and uses of zirconium in a highly visual and fun way.

Video

For the Juniors: Wheely good wheels

Wheels are round and come in many sizes, but how does a wheel turn? In this clip we show you how a wheel and axle work together to provide movement.