Why are convection currents important? Why does air have pressure? Why is the absence of cilia harmful? Why is copper used for most electrical wiring? Why are volatile organic compounds considered hazardous gases? Why do molecules in solids not diffuse into one another?
Why do hot molecules move faster than cold molecules? What are the differences between the convection and conduction currents? What is meant when we say that Energy is transferred in solids by conduction? Insulators (nonmetals) have a higher BE than metals, and it is mo...
The drawing shows the dynamo mechanism that creates Earth's magnetic field: convection currents of fluid metal in Earth's outer core, which are driven by heat flow from the inner core, organized into rolls by the Coriolis force, create circulating electric currents, which generate the magnetic f...
Geologists have hypothesized that the movement of tectonic plates is related toconvection currents in the earth's mantle. ... Tremendous heat and pressure within the earth cause the hot magma to flow in convection currents. These currents cause the movement of the tectonic plates that make up th...
Since fluids such as air typically become less dense (or lighter) as it gets warmer, it causes convection currents to be pushed sideways and upwards as the heavier, more dense fluids are pulled down by gravity. The sun warming the earth is the simplest example of how “thermal radiation” ...
Since the early recognition of mantle convection, it was proposed that descending currents would tend to leave some of their denser constituents at the base of the mantle while less dense components rose to form the crust (Runcorn, 1962a, Runcorn, 1962b). The heavy elements, in particular Fe...
This creates a dynamo effect, or convections and currents within the core. This, in turn, creates Earth's magnetic field — it's like a giant electromagnet. When the solar wind reaches Earth, it collides with the magnetic field, or magnetosphere, rather than with the atmosphere. By far, ...
Convection occurs when materials move in currents due to differences in heat and density. During convection, heated particles begin to circulate, and hot particles move to the top while cold particles move to the bottom. Inside Earth's mantle, when pieces of rock and crust become very hot and...
It is a question that has long puzzled scientists: why do zebras have stripes? A form of camouflage to confuse predators? A way of helping zebras to individually identify other zebras? A natural system of ‘air conditioning’ by regulating convection currents along the animal’s back?
Why are surface currents important? Why is the climate system important? Why does the polar jet stream cause rain? Why are clouds important to the water cycle? Why can't polar bodies be fertilized? Why are convection currents important?