Welcome to our ultimate guide for kids to pack your own suitcase!
When I was a kid, my parents were Scout leaders and one of their rules was that kids should pack their own suitcases. My mum always said that if the kids packed themselves, they knew what they had in their bag or rucksack and how to find things. And they were able to pack to go home.
Now I have my own kids, I can see exactly what she meant. My kids have been packing their own suitcases since they were little. In the beginning, I’d check to ensure that they didn’t have 12 t-shirts and one pair of trousers for a week-long holiday but now I just remind them to take their toothbrush and any vital pieces of kit.
Most scientists believe that the Universe began in a Big Bang around 14 billion years ago. The entire Universe was inside a bubble thousands of times smaller than a pinhead, and was hotter and denser than anything we can imagine.
When the explosion called the Big Bang happened, the Universe as we know it was born. In a fraction of a second, the Universe grew from smaller than a single atom to larger than a galaxy. It kept on growing, and is still expanding today.
Now researchers in America think they have found traces left in the sky that prove this that the Big Bang did really happen. It takes the form of a distinctive twist in the oldest light detectable with telescopes. These twists of light are called ‘gravitational waves’ – the effect is a little bit like how waves form on the surface when you drop a big stone in a pond. However, you also have to imagine that the Big Bang formed the pond itself.
The team leading the project, known as BICEP2, has been using a telescope at the South Pole to make detailed observations of a small patch of sky. The aim was to find evidence of ‘inflation’ – the idea that the cosmos grew rapidly in its first trillionth, or trillionth of a trillionth of a second – growing from something unimaginably small to something about the size of a marble.
The leader of the team, Prof John Kovac of the Harvard-Smithsonian Center for Astrophysics said:
“This is opening a window on what we believe to be a new regime of physics – the physics of what happened in the first unbelievably tiny fraction of a second in the Universe.”
Over the coming years, scientists will work hard to investigate every aspect of this discovery. Other experiments will be carried out to see if they can replicate the findings of the American team. If this research is confirmed, it will be one of the greatest scientific discoveries of our time.
EDIT
Dr Sarah Bearchell drew our attention to this video, which explains the concept of gravity and gravitational waves with the help of a towel, an apple and a ping pong ball. Check it out
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
I expect most of you have heard of antonyms, and even if you haven’t heard the word, you know them and use them every day. Antonyms are words that mean the opposite. For example, hot is the antonym of cold, rich is the antonym of poor.
But what happens when we have a word that doesn’t have another antonym – it is the antonym of itself?! You are probably wondering what on earth that could mean. Well, there are some words that have two meanings which are the opposite of each other. This makes the word its own antonym. Words like this are known as contronyms.
One very common one that we shall start with is a word that you use all the time without ever thinking about it being a contronym. This is left, which can mean “gone, departed” or “still there, remaining” . If you have gone, then you have left, but if everyone else except you has gone, then you are left!
Parental information – this article contains a frank factual interview about what happens to a person procedurally after they die.
Have you ever wondered what actually happens after someone dies? And what is it like to work in this area?
This subject can be a difficult and emotional one, but the whole mystery surrounding death can be better understood with a clear explanation of what happens, step by step.
Carolyn Ward talks to Anna, a mortuary assistant or ‘Anatomical Pathology Technologist’, about what happens when somebody dies, and what led her to choose such a potentially sad career.
