If a planet is too close to its sun, it’s too hot for life as we know it, too far away and everything is frozen, but around each star there’s a Goldilocks Zone where there is the potential for water on a planet’s surface. As we know water is essential for life. Is Earth a…
Today we are looking at filtering and how it can be used to clean dirty water. This water filter science project is very simplified but gives kids a great overview of how water purification is carried out to give us lovely clean drinking water. Do not drink the water in the activity Water Filter Science…
Our Moon is the largest moon in the Solar System relative to its parent planet. It’s thought to have been created about 4.5 billion years ago when an object a similar size to Mars called Theia crashed into Earth. The impact melted part of the Earth’s rocky mantle, which together with debris from Theia was…
Greenhouse gases are gases in the Earth’s atmosphere which trap heat. An increase in greenhouse gases caused by human activity is responsible for the greenhouse effect and global warming. Think how it feels when you enter a greenhouse or when you sit in a room with lots of windows on a hot day. It feels…
Nitrogen is an essential element for living organisms as it’s needed to make proteins for growth and repair and other biological functions. Nitrogen moves through the air, soil and living organisms ( plants, animals and bacteria ) in a process called the Nitrogen Cycle. Where is nitrogen found? In the air as a gas. About…
The Archimedes’ Principle is a scientific law which explains why some objects sink and some objects float. Archimedes was one of the world’s greatest scientists. He was a mathematician, inventor, engineer and astronomer, but is arguably most famous for his Eureka moment which led to the development of the Archimedes’ Principle. Buoyancy and Archimedes Objects…
I’ve lost count of the number of water science experiments we’ve done over the years. Water is pretty amazing. Did you know it is the only natural substance to exist in three physical states at temperatures naturally occurring on Earth? Facts about Water Water has lots of properties that make it just brilliant for simple…
The ocean looks blue because of how it absorbs sunlight. Water absorbs the longer wavelength colours at the red end of the light spectrum and the short wavelength violet and ultraviolet light. Blue light is absorbed the least and is scattered and reflected back into our eyes, which makes the ocean look blue. The actual…
Visible or white light is made up of a range of colours each with a different wavelength. One way to see the different colours is to use a prism to split the light. When white light enters the prism it slows down and changes direction. The amount the light changes depends on the wavelength. Red…
Do you know why the sky looks blue? Light from the sun is made up of all the colours of the rainbow. A rainbow in the sky is formed when sunlight is refracted and dispersed in drops of rain or mist which splits the white light into its constituent colours. Red light has the longest…
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