Week 4 Content Questions

Light is one form of electromagnetic radiation . What be electromagnetic waves , and what other types exist besides light ? analyse their wavelengthsElectromagnetic waves are disturbances caused by the oscillation of charged particles . It consists of two split , an electric subject field and a magnetic field hoer perpendicular to each other . The wave is self-sustaining , and propagates at a direction perpendicular to both the electric field and magnetic fieldThere is a whole spectrum of electromagnetic waves . The ones with the longest wavelengths (range : 1 cm-1km ) are the radio waves . After the radio waves , microwaves name the close longest wavelength (range 1mm-10cm . Then , we fox the infrared waves (range : 1 ?m-1mm , followed by light (range : 400nm-700nm , ultraviolet rays (range : 1nm-100nm x-rays (range : 0 .1nm-10nm , and gamma rays , which have the shortest wavelengths amongst the different electromagnetic radiations (range 0 .01nm-0 .1nmb . How you condition the temperature , composition , and exercise of an design from its light spectrumDifferent elements emit and absorb light waves differently . thereof , when viewed through a spectroscope , different elements lead have different spectral patterns . The prey s composition is obtained from noning which spectral lines are present or absent . We can also determine the density of the object depending on the amount of lines present in the spectrum . The more lines and the more continuous the spectrum , the denser is the materialOn the other hand , the temperature of the object will affect the shapes spectral lines emitted by the object . If objects have high temperatures their spectral lines will be broader , that is , it is spread over more frequencies than if it had lower temperature . To determine temperatureFinally , the Doppler Shift tells us the motion of the object , whether it is moving outside or toward us , and with what further .

When the conserved object is moving toward us , the spectral lines we observe occur at shorter wavelengths when we compare it to those measured in the science lab . This is called blueshifted On the other hand , if the object is moving away from us we observe the lines to occur at longer wavelengths . In this case we say that the lines are redshifted The amount of shifting will determine the speed of motionIn what way do astronomers infer that the sunlight s nada comes from nuclear fusion reactions ? How do we know it does not come from chemic burningEven though both nuclear fusions and chemical reactions result in the chemise of energy , nuclear fusions release much more energy than chemical reactions . This is due to the temper of each reaction . Given that the energy that the sun produces is extremely high , it is impossible that chemical reactions are fuelling it , for if that were the case , past the sun will not be producing enough energy to sustain life on Earth . If it were chemical reactions powering it , it would be producing roughly one-millionth of the energy it is producing nowExplain how the Sun produces energy by nuclear fusionBecause of the amount of matter...If you want to get a respectable essay, order it on our website: Ordercustompaper.com

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