big bang (cont.).notebook - unatego bang part ii (2015)2.pdfthat the universe was created as a hot...

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Big Bang (cont.).notebook 1 September 30, 2016 Sep 137:56 AM Sep 137:56 AM Overall, the Universe is EXPANDING Sep 137:56 AM Cosmic Microwave Background Radiation Evidence of Big Bang http://www.belllabs.com/project/feature/archives/cosmology/cosmicnoise.mp3 Sep 137:56 AM Meanwhile, at Princeton University…. Scientists derived a formula [λmax = (2.9 x 10 ‐3 m.K)/T] based on the hypothesis that the Universe was created as a hot big bang and slowly cooled as it expanded …. If true, its current temperature would be 3 K (3 Kelvin) Sep 137:56 AM All objects emit electromagnetic radiation The amount of radiation emitted at each wavelength indicates the temperature of the object Sep 137:56 AM average _________________ _______________ of the _____________________ in an object or a system. Temperature kinetic energy molecules

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Page 1: Big Bang (cont.).notebook - Unatego Bang Part II (2015)2.pdfthat the Universe was created as a hot big bang and slowly cooled as it expanded …. If true, its current temperature would

Big Bang (cont.).notebook

1

September 30, 2016

Sep 13­7:56 AM Sep 13­7:56 AM

Overall, the Universe is EXPANDING

Sep 13­7:56 AM

Cosmic Microwave Background Radiation Evidence of Big Bang 

http://www.bell­labs.com/project/feature/archives/cosmology/cosmicnoise.mp3

Sep 13­7:56 AM

Meanwhile, at Princeton University….Scientists derived a formula [λmax  =  (2.9 x 10‐3 m.K)/T] based on the hypothesis that the Universe was created as a hot big bang and slowly cooled as it expanded ….  

If true, its current temperature would be 3 K (3 Kelvin)

Sep 13­7:56 AM

All objects emit electromagnetic radiation

The amount of radiation emitted at each wavelength indicates the temperature of the object

Sep 13­7:56 AM

average  _________________ _______________ 

of the _____________________ in an object or a

system.

Temperature 

kinetic energy

molecules

Page 2: Big Bang (cont.).notebook - Unatego Bang Part II (2015)2.pdfthat the Universe was created as a hot big bang and slowly cooled as it expanded …. If true, its current temperature would

Big Bang (cont.).notebook

2

September 30, 2016

Sep 13­7:56 AM

Temperature Warmer Temps = more ________________  _______________

(or) more ___________________ _________________

Cooler Temps = less ________________  _________________

(or) less ___________________ __________________

kinetic energy

kinetic energy

molecular movement

molecular movement

Sep 13­7:56 AM

Similar for wavelengths…..

Warmer Temps = ___________________ wavelengths                               (higher frequency)

Cooler Temps = ___________________ wavelengths                               (lower frequency)

shorter

longer

Sep 13­7:56 AM

Temperature of an object is related to the wavelength at which the object gives out the most energy….. this is known as its PEAK

The peak temp for microwave radiation is…..

Sep 13­7:56 AM

Sep 13­7:56 AM

Meanwhile, at Princeton University….

Scientists derived a formula [λmax   =  (2.9 x 10‐3 m.K)/T] based on the hypothesis that the Universe was created as a hot big bang and slowly cooled as it 

expanded ….  

If true, its current temperature would be 3 K (3 Kelvin)

Microwave radiation reaches its maximum energy at ‐270 oC

K = oC + 273 = 3 !