The Big Bang is a theory about how the Universe began. Most scientists believe in the Big Bang theory, which is the current accepted model for the beginning of the Universe. Georges Lemaître first proposed the Big Bang theory in 1927. The theory was supported by Edwin Hubble’s research on cosmological redshift in 1929. What…
Can you believe it’s been over 50 years since humans landed on the moon for the first time? This historic event was not only an incredible feat of science and engineering but also led to many innovations that have improved human life since. If you have children who are fascinated by space travel ( or…
It’s hard to imagine a life without Wi-Fi and all the benefits it brings, but who invented it? Hedy Lamarr and George Antheil Hedy Lamarr (1914-2000 ) and George Antheil (1900 – 1959 ) invented a system which allowed radio waves to jump onto different frequencies. The idea was originally to stop the US Navy’s…
Hooke’s law states that the amount of force applied to an elastic object is proportional to how far it stretches. However, if the object is overstretched it will not spring back. Hooke’s Law only applies if an elastic object is not overstretched. Objects are made from lots of molecules with bonds between them, if too…
This simple investigation is great for learning about stretchy materials. The challenge is to find a material that stretches easily and also returns to its original size. Don’t forget to check out my other ideas for learning about materials and their properties too, including sorting objects from Ariel’s cave, creating a superhero cape and saving…
This mini wave machine is a great way to demonstrate the concept of a wave! It’s easy to make, looks great and can be used over and over again! If you enjoy this activity, don’t forget to take a look at my other easy physics experiments. What is a wave? When you imagine a wave,…
Matter is anything that occupies space and has mass. Everything around us is made of matter. You may have heard the phrase states of matter. Matter can take different forms depending on the conditions. Here on Earth matter is generally in the form of a solid, liquid or a gas. Matter is made up of…
Voltage is the force that pushes current around a circuit. Imagine a battery being like a pump, pushing the current around the circuit. A more complicated way of defining it is that voltage is the difference in electrical energy between two points on a circuit. You can buy batteries with different voltages or use multiple…
How do we see things? We see things because of light! The simple explanation Light bounces off objects and enters our eyes allowing us to see them. It’s harder to see at night as there’s less light to bounce off objects. Let’s make it a bit more complex Light enters the eye through the cornea…
Friction is one of my favourite science concepts to learn about! It’s easy to investigate in many different ways with fun hands-on experiments and investigations. Friction is created when objects are pulled past each other. Imagine pushing a box of books along a carpet and a wooden floor. It would be much easier to push…
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