11-year-old Andre Jefferson explained stick bombs as being, ‘a kinetic chain reaction that is weaved together with jumbo popsicle sticks, that creates tension, and when you take one of the sticks out, it releases potential energy and makes it pop up about this high’.
If you are thinking ‘What?’ then watch the rest of his TEDx talk to find out what a ‘Stick bomb’ is and what makes them jump.
What is the difference between introvert and extrovert? And which one are you?
What does an INTROVERT look like?
Introverts tend to be people who are most comfortable in their own company or spending time with a small, familiar group of friends. They are analytical in their thinking, like to have all of the available facts to hand before making a decision and are probably a little bit uncomfortable when forced into the limelight. Introverts think before they speak.
What does an EXTROVERT look like?
Extroverts, on the other hand, think as they speak! They’re happy to take centre stage, love to talk about anything and everything that comes to mind, are happy being part of a large group and make fast decisions. Extroverts are less happy in their own company and tend to get bored without someone around to keep them amused.
In short, introverts are often described as being energised by enjoying time spent alone with their thoughts, whereas extroverts recharge their batteries by being in a roomful of equally extroverted people!
Perhaps you have heard of the term biotechnology and wondered what it is. You may think you know already – after all, the parts that make up the word are very familiar: bio + technology. You have seen the first part of the word in biology, antibiotics, all sorts of words. It comes from Greek bios, which means ‘life’.
As for technology, it is not just about computers and smartphones. Technology is the practical use of knowledge to create useful things and solve problems. You might like to think of it as tech-knowledge-y. So, taking it one step further, biotechnology is about using biology in technology.
We talked to Alessandra Iscaro, a biotechnology researcher at the University of Florence, Italy, and she explained to us what it is all about.
Lions are felines, which means that they are members of the same wider family as cats. Indeed, they are frequently referred to as “large cats” or something similar.
They live on plains and savanna in Africa and India, where the sun beats down on the grassland so that it fades, withers and turns yellow – just the colour of a lion, which helps to camouflage it, so that it can blend in with its surroundings and stay hidden.
Lions are predators, which means they hunt and kill other animals for their meat. The hunting is usually the task of the lioness, while the male lion provides protection from other lions.
They will generally hunt zebras, antelopes, impala, and even giraffes, hippos and young elephants. The lioness may need to attack quickly, before the prey can run away, and the lion can reach amazing speeds of up to 56 km/h (around 30 mph).
Lions generally live in family groups known as prides. This may be made up of between 7 and 10 animals.
A lioness will normally give birth to a litter of three cubs, although occasionally there may be as many as six. These are blind at birth, and remain so for the first two weeks of life, just like kittens!
Lifespan and Population
When a lion lives in the wild, forced to compete for food, and to fight with other lions, and survive in times when prey may be scarce, it has a life expectancy of around 15 years.
However, lions in captivity, that do not have to fight for their territory and have a ready food supply and medical attention may live up to 30 years – double their wild cousins!
The lion population is in decline, which means that there are fewer and fewer. In Africa, there are an estimated 39,000 lions, whereas in Asia the number stands at just 400.
The pupils of Bruntville Primary School have written a short article about the history of South Africa, and an explanation of Apartheid.
What Was Apartheid?
Apartheid was a system that existed in South Africa that separated people based on their ethnicity and skin colour. It became law after the National Party won the election in 1948. They declared many areas as only for white people, and discriminated against people of colour (POC).