Grasp It

What causes wind patterns? Wind paths, ocean currents, and even airplanes are governed by the same invisible force W inds in our atmosphere do not travel in straight lines due to a phenomenon is known as the Coriolis effect. As the Earth spins on its axis, the motion deflects the air above it. The planet’s rotation is faster at the equator because this is where the Earth is broadest. This difference in speed creates the deflection – for example, if you were to project a ball from the equator to the North Pole it would appear to curve off-course. If Earth didn’t spin like this, air on the planet would solely circulate back and forth between the high-pressure poles and the low-pressure equator. When the rotation of the Earth is joined into the mix, it causes the air in the Northern Hemisphere to be deflected to the right, and air in the Southern Hemisphere to the left, away from the equator. As a result, winds circulate in cells. It’s this effect that causes the rotat

What is the world’s fastest bird? Discover why you really don’t want to be a pigeon in peregrine falcon territory      F ound on all of the world’s continents apart from Antarctica, the peregrine falcon is one of the most numerous birds of prey out there. And there’s a purpose for its phenomenal success: blistering speed. Pigeons in mid-flight can’t escape the claws of this plummeting speed demon, which can exceed over 320 kilometers per hour. Known as the stoop, this movement sees the falcon climb in altitude before dive-bombing like a feathery torpedo. Peregrine falcons are able to perform this move thanks to some precise physical adaptations. A streamlined body and tapered wings provide unique velocity and thrust, and a razor-sharp beak and talons rarely let prey escape. A special third eyelid protects the bird’s eyes at high speeds, and tubercles in their nostrils stick out like small, bony cones to deflect the rushing air, letting the peregrine to catch its breath. Each

The rock cycle The forces of nature are constantly  morphing rocks into different forms 1   Igneous rock Igneous, which means ‘born of   fire or heat’, is the rock type   formed when molten magma   cools enough to become solid.   Intrusive igneous rock forms   when the magma cools slowly   under the Earth’s surface, and   extrusive igneous rock forms   when the magma cools rapidly   on the surface, such as after a   volcanic eruption.  2   Rising heat The intense heat found below   the surface – sometimes   stemming from the planet’s   superheated core – can   generate temperatures up to   1,300 degrees Celsius, causing   the rock to melt into a molten   form called magma, which   rises towards the cooler   surface via convection. The Rock Cycle   3   Metamorphic rock The combination of intense pressure   and high temperatures (between 300   and 700 degrees Celsius) doesn’t melt   rocks but changes their chemical   structure. They are transformed into   dense m

What’s Inside a Single Stream Recycling plant ? The machine that separates your recyclables so you don’t have to 1   Tipping floor A steady stream of recycling collection vehicles arrives at the facility, dumping their cargo of various recyclables out onto the tipping floor. Drivers look out for any oversized things like car engines that would cause destruction to the plant machines. 2  Loading Powerful loaders shunt heaps of mixed recyclables into a large hopper, where they are tumbled over a rotating drum to loosen compacted materials. They then flow onto a giant conveyer belt, which speeds the jumble into the main facility. 3  Manual pre-sort Teams of human sorters pick out non-recyclable items from the fast-moving stream, including crisp packets, plastic bags, shoes, and nappies, as well as big items like scrap metal that might block the machines. 4  Star screen sorting A series of vibrating, rotating shafts, fitted with offset star-shaped discs, eleva