Category: Brain Dump

Will we use hyperloops to commute in the future?

(Image credit: Wikimedia Commons/Neuhausengroup) Question from Ewan Bailey A hyperloop–an enclosed steel tube through which a vehicle moves at more than 965 kilometres per hour – could one day be used for commuting, but...

What is used to colour stained-glass windows?

(Image credit: S. Hermann & F. Richter/ Pixabay) Question from Nicholas Foster Metal salts and tiny metal particles have coloured stained glass for thousands of years. For metal particles, this uses the electron movement...

Why weren’t ships made of metal sooner?

(Image source: Pixabay) Question from Joe Robertson Although metal work has existed for centuries for things such as swords and armour, the sheer amount of metal required and the techniques needed to forge them...

Have we discovered all the land on Earth?

(Image source: Pixabay) Question from Lois Hughes Most scientists agree that we’re familiar with almost all of our planet’s surface. We don’t know for sure, but we can be fairly certain there aren’t vast...

What in a snake’s venom makes it poisonous?

(Image source: Pixabay) Question from Oscar Schulz There are three main types of toxic secretion in snakes designed to stop prey in its tracks. Cytotoxins are rich in enzymes and kick-start digestion of soft...

Can you injure yourself by stretching?

(Image source: Pixabay) Question from Imre Sebestyén We all know how enjoyable it is to have a good stretch when we get out of bed in the morning. As well as being rewarding, stretching...

What are saturn’s rings made of?

They may not be as interesting as the moons around Uranus but Saturn’s rings do bear further investigation… Saturn – The Roche lobe causes gravitational forces around Saturn to hold rocky particles Inner rings...

Why do our eyes close when we sneeze?

(Image source: Pexels) Question from Ashley Morgan Sneezing happens for all manner of reasons. Your nose is extremely sensitive so when it is exposed to a change in temperature or small allergic particles like...