How do aeroplanes fly?
For millennia humans have dreamed about being able to fly and this shows in our myths and legends; there’s Icarus,…
Category: Physics
How do plasma balls work?
This question was asked by Hollie from Plymouth, UK. Plasma is sometimes known as the fourth state of matter; it…
What would happen if you fired a gun in space?
This question was asked by Leo and Sol from West Sussex, UK. The first thing to think about is whether…
What are gravitational waves?
In 1915 Albert Einstein predicted that when objects with an extremely dense mass collided with each other in space they…
What would happen if the Earth stopped spinning?
This question was asked by Ana from Aracena, Spain. Many people think that if the Earth stopped spinning there would…
Why is there gravity on Earth but not in space?
This question was asked by Joseph from Plymouth, UK. Although gravity has always existed on Earth, it wasn’t until the…
Why do bubbles form in a glass of water that’s been left for a while?
This question was asked by Lucy from Taunton, UK. You may have noticed that if you leave a glass of…
Could a chocolate teapot actually be useful?
This question was asked by Liz from St Albans, UK. “As useful as a chocolate teapot” is a phrase used…
Does water always swirl the same way when it drains?
This question was asked by Sue from York, UK. It’s a commonly accepted idea that in the northern hemisphere (the…
Why is the sea blue when water is clear?
This question was asked by Cat from Dundee, UK. If you look at a glass of water, it’s pretty obvious…