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Winter Wonderings – Are Snowflakes Really All Different?
It’s a common belief that no two snowflakes are the same, and in a way this is true. No snowflake can ever be completely identical to another, because when you get down to the molecular level they will have slightly different kinds of water molecules, different electrons and different traces of other materials such as specks of dust.
However, if we’re talking only about the appearance and shape of a snowflake, then yes it is possible that some will have duplicates. Snow crystals can vary from fairly simple, hexagonal structures to the more complex and delicate shapes that we commonly think of as snowflakes.
The simple flakes have far fewer molecules than their larger cousins and so it’s entirely possible that you could find two that appeared identical when viewed through a microscope. The more complex structures, however, can have more than a hundred different features and each feature can form in a number of different ways. This makes it highly unlikely that you would ever find two large snowflakes that looked the same – but you could have fun trying!
For a more detailed explanation of the science behind the forming of snowflakes, check out this video
Science News – Solar Storms Due to Hit Earth
This weekend the Earth is due to be hit by a pair of solar storms that might affect radio and satellite communication. But how and why does this happen?
What Does Solar Mean?
Anything that is related to a sun is commonly described as being solar. Our sun is a typical medium-sized yellow star which is about 5 billion years old. Its surface temperature is about 5,500°C, but even that isn’t as hot as its superheated centre. Some parts of the sun’s surface are cooler, with a temperature of between 2,700–4,200°C, and these appear darker when viewed through specialised telescopes. These cooler patches are caused by fluctuations in the sun’s magnetism and are called sun spots.
Stories from the Stables – Part 4 – Summer Camp
Summer Camp at the Stables, from Carolyn Ward
Once a year, in August, Stourton Stables had a summer camp. Fifteen lucky kids were invited to spend a whole week with their pony, grooming, tacking up, and riding every day. There would be a jumping competition and picnic hacks, a visit to the three counties showground, and a swim at the leisure centre.
I was allocated Heidi, a grey mare with a snotty attitude. Literally. One of her tricks was to toss her head about whilst being ridden and flick massive globs of snot and foam backwards into the rider’s face.
Aside from the snot, she was zippy and responsive, pleasant enough to ride; but her main problem was she was evil to groom and tack up. She was a biter and a kicker. Hence I gave an audible groan when they announced we would have to wash our pony’s tail. Drat!
The US Election – An Explainer for Kids
The voting system in the US election often confuses people. What is an Electoral College, and what is the difference between the ‘popular vote’ and the ‘electoral college vote’? Who are the people who work in Congress, and what is the difference between the Senate and the House of Representatives? We take a closer look and answer these and other questions, in a kid-friendly way.
How Do We Know How Old an Artifact Is? A Kid-Friendly Introduction of Carbon Dating
