#Physics phenomena skin#

The high speed at which the fluid moves in a waterspout causes a decrease in pressure, forming the “eye” at the centre, similar to what is observed in a hurricane. This change stems from the fact that the sum of pressure energy, kinetic energy, and potential energy per unit mass must remain constant. The waterspout is a column of cloud-filled wind rotating over a body of water, and it is formed from the condensation in the clouds.īernoulli’s principle states that when there is an increase in the speed of a fluid, there would be a simultaneous decrease in static pressure or the fluid’s potential energy. Moving closer to home, Singaporeans also experienced a natural phenomenon in the form of a giant waterspout not too long ago. When the methane was heated, turning it into a gaseous state, the pressure built up created a force large enough to collapse the ground, with blocks of ice and soil being thrown a measurable distance from the epicentre. Permafrost is a permanently frozen layer of soil and other particles held together by ice on or under Earth’s surface.įrozen gases, such as methane, were trapped underneath this surface. Moving on to a rare phenomenon that occurred recently, let us explore the science behind the permafrost explosions sighted not too long ago in Siberia.

This is consistent with the first law of thermodynamics, as no heat is lost but merely transferred.Ĥ. The latent heat of vaporisation causes your sweat to evaporate, which transfer the heat into the atmosphere, allowing our body temperature to drop to acceptable levels.

#Physics phenomena skin#

When our body heat rises above a certain level, our skin will start to produce sweat. Since the energy level has to stay constant, it can only be converted from one form to another. Energy is neither created nor destroyed, and it can only be changed or transferred from one form to another. To understand why we sweat, we need to understand the first law of thermodynamics. The second arc is formed due to sunlight being reflected twice on the inside of the water droplets.

Sometimes, we might even see a double rainbow, which has a second arc with the colours of the rainbow reversed. As the light passes through the water droplets, it bends and splits the light, which is comprised of several wavelengths, into the seven distinct colours we see in a rainbow. When a downpour nears its end, and the sun reveals itself from the departing clouds, the sunlight shines on the water droplets floating in the air. But why do we only catch a glimpse of them periodically? This is because rainbows are an optical phenomenon that only appear when specific sunlight and atmospheric conditions are met – and the viewer has to be in the correct position to see them. Rainbows are multicoloured arches that we occasionally see on rainy days. Once the light is gone, the air channel then collapses back in on itself, creating a sound wave that we would recognise as thunder. When lightning strikes the Earth, a column of air is opened, called a “channel”. The ice molecules gain kinetic energy and start to vibrate inside the cloud, making them collide and rub against each other, producing charges that we would eventually see as lightning.Īs for thunder, it comes later than lightning as lightning has to occur first for the sound of thunder to be produced. As the temperature of the clouds drops below the freezing point, water vapour is converted into its solid state, forming ice. The most common natural phenomenon that we see and experience in Singapore would probably be the formation of lightning and thunder. Lightning, thunder, electricity and sound Read on to find out more about the various phenomena happening around us and the science behind them.ġ.

Some we may be familiar with others may provide exciting applications to the different theories we have learnt. There is always a reason behind what we experience and a possible link to the science that we study. Complex natural phenomena can be anything from our bodily processes to interactions between the elements of nature.