StudentHerb-The blogs for Students.

  BY ·Barry Allen 1. Twisters are measured on the Fujita Scale Tornadoes are rated on the ‘Fujita Scale’ which measures their intensity. ‘F5’ is the highest end of the scale and is described as ‘incredible damage’ with houses levelled off foundations and cars and trees flung in the air. A twister of the is magnitude is between 420km/h (261mph) to 511 km/h (318 mph). 2. Tornadoes have touched down everywhere but Antartica  Tornadoes have hit every continent on Earth exception of one. There are no records of a twister landing on the southernmost continent. That’s because it’s not possible. The freezing atmospheric conditions prevent them from forming.  3. They may be powerful but they are no match for their solar equivalents Our twisters on Earth are pretty impressive but are no match for the 70,000km (43,496mi) tall beasts on The Sun.  4. The worst tornado in history was in 1925 Perhaps the worst ever tornado was the Tri-state tornado on 18 March 1925. The deadly ...

  Do commercial airliners have to obey speed limits in the sky? BY Barry Allen There are speed limits on airliners, but these vary depending on how high and where they are flying. For example, if flying under 3,000 metres airliners are often limited to 463 kilometres per hour. Speed limits around busy airports are lower. In some places, like flying at high altitude over the ocean, there is no legal speed limit, but the airliner’s manufacturer will have set a maximum speed that the pilot is forbidden to exceed to avoid damaging the aircraft.

  15 amazing facts about stars. BY Barry Allen·  28/04/2021 Human beings have been making up stories and theories to explain the stars since prehistoric times, and the study of the stars has played a crucial role in the development of science and technology throughout history, inspiring everything from calculus to clockwork. But the idea that the stars might be ‘suns’ in their own right, unimaginably distant from Earth, is a surprisingly recent one, and it’s only in the past century or so that astronomers have really got to grips with the true variety of stars. Along the way, they’ve discovered that the Sun is really nothing special – a distinctly ‘average Joe’ compared to some of the extremes found elsewhere in our galaxy and the wider cosmos. And the journey of discovery is still ongoing. While we now have convincing theories to explain the birth and death of stars, their internal power sources and their varied properties, new telescopes and satellites are continua...