The last time Dr Matthew Piccaver wrote for Jump! Mag, it was on the topic of poo, and today he’s going to tell you a bit about the part of your body that you might just have wrinkled in disgust… the nose! Find out how noses work but don’t get too comfortable, because it snot over yet …
We often talk about self-confidence and self-esteem in tweens. These two are linked, but slightly different. Self-esteem is about how you feel about yourself, how you value your abilities and yourself. Self-confidence is about how you feel about your abilities, about trusting yourself to do something.
You could have a high self-esteem generally, but have low self-confidence in a particular area, e.g. doing maths, or standing in front of the classroom and presenting a book report.
We often split people into ‘confident’ and ‘not confident’, but we can all learn to be more confident. It just takes a bit of practice. Here are our top tips for increasing self-confidence and self-esteem!
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
Last time we looked at uses of Physics, both in day to day life, and in careers. Today we will focus on History – the study of the past and how our society came to be as it is. Here are some ways in which studying History is useful to us:
Critical Thinking
Thinking by Elisabeth Haslam
When we study history we don’t just learn lists of facts and dates off by heart. We read lots of opinions about what happened and why, and come to our own conclusion. We base these opinions on two types of material, primary sources which are texts and drawings created at the time of the history we are studying, and secondary sources which were written after the event.
